bolt

• n. 螺栓，螺钉；闪电，雷电；门闩；弩箭
• vt. 筛选；囫囵吞下；（把门、窗等）闩上；突然说出，脱口说出
• vi. （门窗等）闩上，拴住；冲出，跳出；（马等的）脱缰；囫囵吞下
• adv. 突然地；像箭似地；直立地

来自PIE *bheld, 击，打。可能同bill, 击，咬，鸟嘴。

1. a discharge of lightning accompanied by thunder

2. a sliding bar in a breech-loading firearm that ejects an empty cartridge and replaces it and closes the breech

3. the part of a lock that is engaged or withdrawn with a key

4. the act of moving with great haste;

"he made a dash for the door"

5. a roll of cloth or wallpaper of a definite length

6. a screw that screws into a nut to form a fastener

7. a sudden abandonment (as from a political party)

bolt

bolt: [OE] In Old English, a bolt was an arrow, particularly of the short stout variety used in crossbows (hence the phrase shoot one’s bolt). The more familiar modern sense ‘fastening pin’ developed in the 13th century. The verbal sense ‘make a quick escape’ comes from the notion of firing a projectile. The word appears in other Germanic languages (for instance German bolz ‘bolt’), but its ultimate origin is unknown.

bolt (n.)

Old English bolt "short, stout arrow with a heavy head;" also "crossbow for throwing bolts," from Proto-Germanic *bultas (cognates: Old Norse bolti, Danish bolt, Dutch bout, German Bolzen), perhaps from PIE root *bheld- "to knock, strike" (cognates: Lithuanian beldu "I knock," baldas "pole for striking").

Applied since Middle English to other short metal rods (especially those with knobbed ends). From the notion of an arrow's flight comes the lightning bolt (1530s). A bolt of canvas (c. 1400) was so called for its shape. Adverbial phrase bolt upright is from late 14c.

bolt (v.)

from bolt (n.) in its various senses; from a crossbow arrow's quick flight comes the meaning "to spring, to make a quick start" (early 13c.). Via the notion of runaway horses, this came to mean "to leave suddenly" (early 19c.). Meaning "to gulp down food" is from 1794. The meaning "to secure by means of a bolt" is from 1580s. Related: Bolted; bolting.

nuts and bolts

螺帽和螺栓

牛津词典

Her dismissal came as a bolt from the blue.

她被解雇简直就是晴天霹雳。

牛津词典

Don't forget to bolt the door.

别忘了闩门。

牛津词典

The gate bolts on the inside.

大门在里面上闩。

牛津词典

The vice is bolted to the workbench.

这虎钳是用螺栓固定在工作台上的。

牛津词典

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。

牛津词典

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。

牛津词典

Don't bolt your food!

吃饭不能狼吞虎咽！

牛津词典

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。

牛津词典

Suddenly a bolt of lightning crackled through the sky.

突然一道闪电划破长空。

柯林斯高阶英语词典

...bolts of black silk.

成匹的黑丝绸

柯林斯高阶英语词典

If the soil dries out the plants may bolt.

如果土壤过干，植株可能会过早结实。

柯林斯高阶英语词典

His father kept a tight grip on his collar in case he should make a bolt for the door.

他的父亲紧紧抓住他的衣领，防止他夺门而逃。

柯林斯高阶英语词典

The company decided to appoint a Japanese manager as president of the company. The decision came as a bolt from the blue.

公司决定任命一位日籍经理担任总裁。这个决定太出乎意料了。

柯林斯高阶英语词典

When I pushed his door open, Trevor was sitting bolt upright in bed.

当我推开特雷弗的房门时，他正腰杆笔直地坐在床上。

柯林斯高阶英语词典

Being under stress can cause you to miss meals, eat on the move, or bolt your food.

人在压力之下有时会吃不上饭，或边走边吃，或是匆匆吃上几口。

柯林斯高阶英语词典

I made some excuse and bolted for the exit.

我编了个借口后便向出口冲去。

柯林斯高阶英语词典

...the heavy bolted doors.

紧锁的大门

柯林斯高阶英语词典

The pig rose squealing and bolted...

那头猪突然嗷嗷叫着狂奔起来。

柯林斯高阶英语词典

He reminded her that he would have to lock and bolt the kitchen door after her.

他提醒她,在她走后他得把厨房的门上锁并闩上。

柯林斯高阶英语词典

I heard the sound of a bolt being slowly and reluctantly slid open.

我听到门闩被缓慢而吃力地拉开的声音。

柯林斯高阶英语词典

Bolt the components together...

把元器件组装在一起。

柯林斯高阶英语词典

The safety belt is easy to fit as there's no need to bolt it to seat belt anchorage points...

由于不必扣在座位的固定夹上，安全带很容易就可以系好。

柯林斯高阶英语词典

Mainly in cases, this part analysis this three positive transfer manifestation rules in teaching . 6.

这一部分主要以案例形式, 对正迁移三种表现规律在教学中的表现进行了分析.

期刊摘选