☀️ 可再生能源：用不完的能量☀️ Renewable Energy: Power That Never Runs Out
上一片看到物种在消失，烧化石燃料是推手之一。这天向导翻开电费单：有没有用不完、又干净的能量？有，请看五位选手。Last leaf, species were vanishing — and burning fossil fuels is one of the drivers. Today our blue-planet guide opens the power bill: is there energy that never runs out and stays clean? Yes — meet the five players.
第 1 步：五位用不完的选手Step 1: Five players that never run out
先点名：太阳、风、水、地热、生物质，个个都取之不尽。Roll call first: sun, wind, water, underground heat, plants — none of them can be used up.
太阳能是晒出来的电，风能是风吹转的扇叶。水能靠大坝拦水发电，地热能用地下的热蒸汽。生物质能烧秸秆木屑，种出来就能再烧。它们只借自然的手，不掏空地球的老本。Solar power is sunshine turned into electricity; wind power is breezes spinning giant blades. Hydro power holds rivers back with dams; geothermal power runs on underground steam. Biomass burns straw and wood chips — grow more, burn more. They only borrow nature's hand, never empty Earth's savings.
五位选手里，谁家用得最多、最猛？答案是中国。Which country fields these five players the biggest? The answer is China.
第 2 步：中国装机世界第一Step 2: China installs more than anyone
中国的风电和光伏装机都是世界第一。戈壁上排开光伏板，草原上立起大风车。装机就是装好的发电能力，越多说明转身越快。“双碳”目标更定了方向：先达峰，再中和。China leads the world in both wind and solar installations. Solar panels line the deserts, giant turbines rise over the grasslands. Capacity means ready-to-run power — more of it, faster the turn. And the “dual carbon” goals set the course: peak first, neutralize after.
可风会停、天会黑，没风没太阳的夜晚，灯怎么还亮着？But wind stops and nights fall — with no wind and no sun, how do the lamps stay on?
第 3 步：没风没太阳，靠储能顶上Step 3: No wind, no sun — storage carries the night
这叫间歇性：看天吃饭，不稳定。办法是存电：大电池白天吃饱，夜里放电。水库也能当电池，高处存水、低处放水发电。有了储能，灯就彻夜不灭。This is intermittency: the harvest depends on the sky, so it wobbles. The fix is storing power: big batteries feast by day and feed the town by night. Reservoirs double as batteries too — pump water up, let it down to make power. With storage, the lamps never go out.
🎮 你来当调度员（30 秒）🎮 Your turn: grid dispatcher (30 seconds)
道理讲完了。拖滑块配电源，供电落在 100~140 度。连过 4 关天气，最难的是无风夜。Theory done. Drag the three source sliders to land supply between 100 and 140 units; clear 4 rounds of weather — the calm night is the toughest.
一句话记住它：可再生能源 = 用不完的五位选手（太阳风水热草）；中国装机世界第一；没风没太阳时，储能和水电顶上。Remember it in one line: renewables = five players that never run out (sun, wind, water, heat, plants); China installs the most; when wind and sun rest, storage and hydro carry on.
五选手太阳能、风能、水能等，用不完、排放少Five players: solar, wind, hydro, geothermal, biomass — endless, low emissions中国风电光伏装机世界第一，“双碳”定方向China leads the world in wind + solar; “dual carbon” sets the course间歇性靠储能破：电池和水库把白天的电留给夜晚Storage beats intermittency: batteries and reservoirs save daytime power for the night
内容参考 OpenStax 等公开教材，多来源核对 · AI 生成、人工审核 · 发现错误欢迎指正，帮这片叶子长得更好。Based on OpenStax and other open textbooks, cross-checked across sources · AI-generated, human-reviewed · Spotted a mistake? Tell us — help this leaf grow.
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