Hydroelectricity is the electricity you get from water power — the current that leaves a hydroelectric plant and goes into the wires. Hydroelectric is the adjective (a hydroelectric dam); this is the noun (the energy itself).

Hydroelectricity ishydroelectricity是 the electricity you get from water power你從水力得到的電力—the current that leaves a hydroelectric plant也就是離開水力發電廠 and goes into the wires進入電線裡的那股電流。Hydroelectric is the adjectivehydroelectric是形容詞 (a hydroelectric dam)（例如a hydroelectric dam）；this is the noun這個字則是名詞 (the energy itself)（指能量本身）。

News and textbooks switch between “hydroelectric power” and “hydroelectricity,” and in ordinary talk they are very close. Strictly, this word is the electricity.

News and textbooks新聞和教科書 switch between hydroelectric power and hydroelectricity會交替使用hydroelectric power和hydroelectricity，and in ordinary talk在日常說話裡 they are very close這兩者很接近。Strictly嚴格來說，this word is the electricity這個字指的是電力本身。

It sits next to wind and solar as one kind of renewable power. Same real picture as hydroelectric: dams, falling water, turbines. Same caution too: cleaner at the chimney than coal, but a dam is still a huge change to a river.

It sits next to wind and solar它和風力、太陽能並列 as one kind of renewable power是再生能源的一種。Same real picture as hydroelectric跟hydroelectric一樣的實際畫面：dams, falling water, turbines水壩、落下的水、渦輪機。Same caution too同樣的提醒也適用：cleaner at the chimney than coal煙囪排放比燒煤乾淨，but a dam is still a huge change to a river但水壩仍然是對一條河流的巨大改變。