lock
US /lɑːk/
UK /lɑːk/

1.
2.
船闸, 水闸
a section of a canal or river with gates at each end where the water level can be changed to allow boats to go up or down
:
•
The boat slowly entered the canal lock.
船只缓慢地进入运河船闸。
•
Operating a lock requires careful timing.
操作船闸需要精确的时机。
1.