B2 Lesson: Renewable Energy មេរៀន B2: ថាមពលកកើតឡើងវិញ บทเรียน B2: พลังงานหมุนเวียน Bài học B2: Năng lượng tái tạo B2课程：可再生能源 B2レッスン：再生可能エネルギー B2 레슨: 재생 에너지 Leçon B2 : Énergie renouvelable Lección B2: Energía renovable الدرس B2: الطاقة المتجددة B2 पाठ: नवीकरणीय ऊर्जा Урок B2: Возобновляемая энергия
Welcome to Ratanakiri, where the lush jungles meet sustainable innovation. Join Tola, a dedicated lake ranger, and Ravy, a local artisan, as they explore renewable energy solutions for their community. Today, you will learn essential vocabulary and master defining and non-defining relative clauses. សូមស្វាគមន៍មកកាន់រតនគិរី ជាកន្លែងដែលព្រៃស្រោងជួបនឹងការច្នៃប្រឌិតប្រកបដោយនិរន្តរភាព... ยินดีต้อนรับสู่รัตนคีรี ที่ซึ่งป่าอันเขียวชอุ่มพบกับนวัตกรรมที่ยั่งยืน... Chào mừng đến với Ratanakiri, nơi những khu rừng rậm rạp gặp gỡ sự đổi mới bền vững... 欢迎来到腊塔纳基里，在这里茂密的丛林与可持续创新相遇... 緑豊かなジャングルと持続可能なイノベーションが交差するラタナキリへようこそ... 울창한 정글과 지속 가능한 혁신이 만나는 라타나키리에 오신 것을 환영합니다... Bienvenue à Ratanakiri, où les jungles luxuriantes rencontrent l'innovation durable... Bienvenidos a Ratanakiri, donde las exuberantes selvas se encuentran con la innovación sostenible... مرحبًا بكم في راتاناكيري، حيث تلتقي الأدغال المورقة بالابتكار المستدام... रतनकिरी में आपका स्वागत है, जहाँ हरे-भरे जंगल टिकाऊ नवाचार से मिलते हैं... Добро пожаловать в Ратанакири, где густые джунгли встречаются с устойчивыми инновациями...
1. Vocabulary: Renewable Energy
Listen and repeat the words. Then, drag them to the correct box below.
Hydropower
/ˈhaɪ.droʊˌpaʊ.ɚ/Electricity produced by using the force of fast-moving water. វារីអគ្គិសនី ไฟฟ้าพลังน้ำ Thủy điện 水电 水力発電 수력 발전 Énergie hydroélectrique Energía hidroeléctrica طاقة كهرومائية पनबिजली Гидроэнергетика
Sustainable
/səˈsteɪ.nə.bəl/Able to continue over a period of time without damaging the environment. មាននិរន្តរភាព ยั่งยืน Bền vững 可持续的 持続可能な 지속 가능한 Durable Sostenible مستدام टिकाऊ Устойчивый
Turbine
/ˈtɝː.baɪn/A machine that produces continuous power, driven by water, steam, or gas. ទួរប៊ីន กังหัน Tua bin 涡轮机 タービン 터빈 Turbine Turbina توربين टरबाइन Турбина
Solar array
/ˈsoʊ.lɚ əˈreɪ/A collection of multiple solar panels that generate electricity as a system. ប្រព័ន្ធបន្ទះស្រូបពន្លឺព្រះអាទិត្យ แผงโซลาร์เซลล์ Hệ thống pin mặt trời 太阳能电池阵列 ソーラーアレイ 태양광 어레이 Réseau solaire Matriz solar مصفوفة شمسية सौर सरणी Солнечная батарея
Biomass
/ˈbaɪ.oʊˌmæs/Plant or animal material used for energy production, or in various industrial processes. ជីវម៉ាស ชีวมวล Sinh khối 生物质 バイオマス 바이오매스 Biomasse Biomasa كتلة حيوية बायोमास Биомасса
Grid-connected
/ɡrɪd kəˈnek.tɪd/Linked to the main public electricity network. ភ្ជាប់បណ្តាញអគ្គិសនី เชื่อมต่อกับกริด Kết nối lưới điện 并网的 系統連系 계통 연계형 Connecté au réseau Conectado a la red متصل بالشبكة ग्रिड से जुड़ा Подключенный к сети
Geothermal
/ˌdʒiː.oʊˈθɝː.məl/Relating to or produced by the internal heat of the earth. កំដៅផែនដី พลังงานความร้อนใต้พิภพ Địa nhiệt 地热的 地熱の 지열의 Géothermique Geotérmica حراري أرضي भूतापीय Геотермальный
Emission
/iˈmɪʃ.ən/The production and discharge of something, especially gas or radiation. ការបំភាយ การปล่อยมลพิษ Khí thải 排放 排出 배출 Émission Emisión انبعاث उत्सर्जन Выброс
Off-grid
/ˌɒfˈɡrɪd/Not dependent on public utilities, especially the electricity supply. មិនប្រើប្រាស់បណ្តាញអគ្គិសនីរដ្ឋ นอกกริด Độc lập với lưới điện 脱网 オフグリッド 오프 그리드 Hors réseau Fuera de la red خارج الشبكة ऑफ-ग्रिड Автономный
Conservation
/ˌkɑːn.sɚˈveɪ.ʃən/The protection of plants, animals, and natural resources. ការអភិរក្ស การอนุรักษ์ Bảo tồn 保护 保全 보존 Conservation Conservación حفظ संरक्षण Охрана природы
Match the Definitions
2. Grammar: Defining/Non-Defining Relative Clauses
Relative clauses give us more information about a noun. At the B2 level, it is critical to distinguish between Defining clauses (essential information) and Non-Defining clauses (extra information).
| Clause Type | Rule | Example |
|---|---|---|
| Defining | Gives essential information. Do not use commas. "That" can replace who/which. | The engineer who designed the solar array works in Ratanakiri. |
| Non-Defining | Gives extra, non-essential information. Must use commas. Cannot use "that". | Tola, who is a lake ranger, supports renewable energy. |
Grammar Practice: Part 1 - Relative Pronouns
Fill in the correct relative pronoun (who, which, whose, where). Do not use "that".
Grammar Practice: Part 2 - Defining vs. Non-Defining
Type "D" for Defining or "ND" for Non-Defining based on the sentence structure.
3. Reading: The Green Transition at Yeak Laom
Ratanakiri province, which is famous for its stunning landscapes and indigenous cultures, is undergoing a quiet revolution. At the heart of this transition is Yeak Laom Lake, a volcanic crater lake where conservation efforts are deeply respected by the local community. Tola, who works as a dedicated lake ranger, patrols the area daily. His primary focus has always been the protection of the surrounding forests, but recently, he has become an advocate for sustainable technologies.
Last Tuesday, Tola visited Ravy, a local artisan whose off-grid workshop sits just a few kilometers from the lake's edge. Ravy produces traditional crafts using natural materials, but her methods of powering her tools have completely modernized. Instead of relying on a loud, diesel-powered generator, which produces harmful emissions, she recently installed a state-of-the-art solar array on her roof.
"The solar panels, which were donated by a renewable energy NGO, have changed everything," Ravy explained to Tola while carving a piece of reclaimed wood. "Because my workshop is completely off-grid, I used to worry about the cost and pollution of diesel. Now, my energy is completely sustainable."
Tola nodded in agreement. The local council, which oversees the lake's management, is also looking into hydropower solutions. They are considering installing a small-scale micro-turbine in a nearby stream. This turbine, unlike massive dams that can disrupt ecosystems, would generate just enough electricity to keep the ranger station grid-connected without harming the environment.
"We must embrace these changes," Tola noted. "If we want to maintain the pristine beauty of Ratanakiri, we have to look into geothermal, biomass, and solar options. Every step we take toward lowering our carbon emissions is a step toward true conservation."
The transition to renewable energy in rural Cambodia is not without its challenges. The initial costs for equipment are high, and maintenance requires specialized knowledge. However, artisans like Ravy and rangers like Tola prove that the adoption of green technology is possible. The tools that they use daily are paving the way for a cleaner, greener Ratanakiri.
Reading Comprehension
4. Listening: Planning for the Future
Tola and Ravy are discussing the possibility of expanding the renewable energy setup. Listen to their conversation.
Listening Quiz
5. Speaking: Roleplay Practice
Imagine you are pitching a new renewable energy idea to Tola. Read the prompts aloud, making sure to use the grammar rules correctly.
6. Writing: Formal Email Proposal
Look at the model text. Notice how the writer uses Non-Defining Relative Clauses to add extra, professional details.
I am writing to propose a new biomass initiative. The agricultural waste, which is currently burned in open fields, creates terrible emissions. By building a processing facility, which requires a small initial investment, we can turn this waste into sustainable fuel.
Your Turn to Write
Complete the formal email below proposing a solar array or a turbine. Add your own relative clauses.
I am writing to suggest that we install a new to support our community.
This project, which , will help us become entirely off-grid.
The local rangers, who , fully support this conservation effort.
Sincerely,
[Your Name]
