引言：

bolt 除了名词 “螺栓” 以外，竟然还有很多有趣的含义，看完才知道为什么博尔特的外号是 “闪电”~~

bolt /bəʊlt/

noun

1

（门窗的）闩，插销

a long, narrow piece of metal that you slide across the inside of a door or window in order to lock it

2

螺栓

a piece of metal like a screw without a point which is used with a circle of metal (= a nut ) to fasten things together

nuts and bolts

螺帽和螺栓

3

~ of lightning

闪电

a sudden flash of lightning in the sky, appearing as a line

4

弩箭

a short heavy arrow shot from a crossbow

5

一匹（布）

a long piece of cloth wound in a roll around a piece of cardboard

习语

a bolt from the blue

突如其来的事件（或消息）；晴天霹雳

an event or a piece of news which is sudden and unexpected; a complete surprise

Her dismissal came as a bolt from the blue.

她被解雇简直就是晴天霹雳。

verb

1

用插销闩上；能被闩上

to fasten sth such as a door or window by sliding a bolt across; to be able to be fastened in this way

[VN] Don't forget to bolt the door.

别忘了闩门。

2

[VN] ~ A to B | ~ A and B together

用螺栓把（甲和乙）固定在一起

to fasten things together with a bolt

The various parts of the car are then bolted together.

然后汽车的各种部件便用螺栓装配在一起。

3

[V] （马等受惊）脱缰

if an animal, especially a horse, bolts , it suddenly runs away because it is frightened

4

[V , usually + adv./prep.] (of a person 人) 跑开；（尤指）逃跑

to run away, especially in order to escape

When he saw the police arrive, he bolted down an alley.

他看见警察来了，便从小巷逃走了。

5

[VN] ~ sth (down)

狼吞虎咽

to eat sth very quickly

Don't bolt your food!

吃饭不能狼吞虎咽！

6

(NAmE) 停止支持（某团体或政党）

to stop supporting a particular group or political party

[VN] Many Democrats bolted the party to vote Republican.

很多民主党人放弃本党，转而投共和党的票。

Thanks for your reading~