Metal fastener with head and threads, usually used with a nut.

带螺纹并有头部的金属紧固件，通常配螺母。

Sliding bar in a lock that secures a door or gate.

锁具中的滑动插销；门闩。

A single flash of lightning.

闪电；一道电光。

A large roll of fabric; a bolt of cloth.

一大卷布料；一匹布。

To join or fasten using bolts.

用螺栓连接或固定。

To secure a door by sliding the bolt.

把门插上门闩加以封闭。

To run or flee suddenly.

猛然逃跑；迅速冲出。

Of plants, to go to seed prematurely.

（植物）迅速抽薹开花结籽。

To swallow food quickly without chewing.

不嚼就吞下；狼吞虎咽。