noun · a chamber in a canal or river with gates at each end, used for raising or lowering vessels between different water levels

这艘货轮正在通过三峡大坝的五级船闸。

noun · a sliding gate or mechanism used to control the flow or level of water in a channel

他拉下闸，截断了流向麦田的水流。

noun · a device for slowing or stopping a moving vehicle

自行车的闸坏了，得赶紧修。

verb · to stop or control the flow of water

把这条河闸住，引水灌溉农田。

noun · an electrical switch or circuit breaker

离开房间前，请把电闸关掉。

noun · a sluice or sluice gate used to control water flow

干旱季节，管理人员会准时开启水库的闸。