柯林斯詞典rainwater /?re?n?w??t?/ 1. N-UNCOUNT Rainwater is water that has fallen as rain. 雨水 返回 rainwater劍橋詞典water that has fallen as rain , rather than water that has come from a tap 雨水 I collect rainwater to water my plants . 我存雨水來澆花。 返回 rainwater