latch|latched|latches

请记得出门前把门闩好。

Please remember to ___latch the door before leaving.

老师解释了三次，她才终于理解了这个概念。

The teacher explained three times before she finally ___latched onto the idea.

这些锁存器会保持数据直到被手动清除。

These ___latches will hold the data until manually cleared.