[zhá]
[名]
(水闸) floodgate; sluice gate
(制动器) brake
backpedalling brake; coaster brake
脚闸
take off the brake
开闸
step on the brake
踩闸
apply the hand brake
捏闸
[口] (电闸) switch
a two-way switch
双向闸
operate a switch; switch on or off
扳闸
[动]
(截住水) dam up [out] water