a tank for storing water, especially one supplying taps or as part of a flushing toilet 蓄水池,蓄水箱(尤指装上龙头或阀门的水箱或抽水马桶的水箱) ■an underground reservoir for rainwater 地下雨水蓄水池
语源
Middle English: from Old French cisterne, from Latin cisterna, from cista 'box' (see cist)