短语词组短語first impoundment 首次蓄水water impoundment 蓄水impoundment effect 蓄水傚應reservoir impoundment 水庫蓄水surface impoundment 地麪儲存natural impoundment 天然蓄水tailings impoundment 尾鑛堆存impoundment basin 集水池;應急池impoundment lake 集水池 返回 impoundment