闸[zhá] 基本解释：
新英汉大词典：
- 闸(牐)[zhá]
- 名词- （水闸） floodgate; sluice gate- （制动器） brake:
backpedalling brake; coaster brake;脚闸
take off the brake;开闸
- （电闸） switch:a two-way switch;双向闸
operate a switch; switch on or off扳闸
- 动词- （截住水） dam up [out] water
以上内容来源于：《新汉英大辞典》
例句与用法：
A section of a waterway, such as a canal, closed off with gates, in which vessels in transit are raised or lowered by raising or lowering the water level of that section.
The bicycle has no brakes you ride it at your peril.
Water went rushing through the lock gates.
They open the sluice gates of reservoir.
闸的其他解释: