a bolt of lightning
A bolt of lightning struck the old oak tree.
一道闪电击中了那棵老橡树。
闪电
bolts — plural of bolt
一种通常为金属的紧固件,由带螺纹的圆柱体构成,一端有较大的头部,可插入无螺纹孔至头部,另一端用螺母拧紧；重型机械螺丝。；筛子,尤其是用于磨粉和面粉筛选的长细筛；筛粉机。；闪电(伴随雷声的放电)；与插销相关的含义；枪机(后膛装填 firearms 中用于弹出空弹壳、装入新弹并关闭枪膛的滑动部件)
a flash of lightning, especially one accompanied by thunder
一种通常为金属的紧固件,由带螺纹的圆柱体构成,一端有较大的头部,可插入无螺纹孔至头部,另一端用螺母拧紧；重型机械螺丝。
A (usually) metal fastener consisting of a cylindrical body that is threaded, with a larger head on one end. It can be inserted into an unthreaded hole up to the head, with a nut then threaded on the other end; a heavy machine screw.
筛子,尤其是用于磨粉和面粉筛选的长细筛；筛粉机。
A sieve, especially a long fine sieve used in milling for bolting flour and meal; a bolter.
闪电(伴随雷声的放电)
a discharge of lightning accompanied by thunder
与插销相关的含义
Latch-related senses
枪机(后膛装填 firearms 中用于弹出空弹壳、装入新弹并关闭枪膛的滑动部件)
a sliding bar in a breech-loading firearm that ejects an empty cartridge and replaces it and closes the breech
用于固定囚犯腿部的铁制器具；镣铐；脚镣。
An iron to fasten the legs of a prisoner; a shackle; a fetter.
锁舌(锁中由钥匙啮合或收回的部分)
the part of a lock that is engaged or withdrawn with a key
(大蒜、洋葱等植物的)花茎或花葶。
A stalk or scape (of garlic, onion, etc).
一大卷织物或类似材料,如一匹布。
A large roll of fabric or similar material, as a bolt of cloth.
与突然移动相关的含义
Senses involving sudden movement
A bolt of lightning struck the old oak tree during the storm.
风暴中，一道闪电击中了那棵老橡树。
用法提示：这里 bolt 用作可数名词，与 a...of lightning 搭配，表示一道闪电。
We saw a bright bolt flash across the sky last night.
昨晚我们看到一道明亮的闪电划过天空。
用法提示：bolt 作名词，前面有不定冠词 a，描述一次闪电现象。
Thunder usually follows a bolt of lightning.
雷声通常紧随着闪电而来。
用法提示：bolt 与 of lightning 连用，表示闪电的单个事件。
A bolt of lightning struck the old oak tree.
一道闪电击中了那棵老橡树。
指完全出乎意料的事情。
The news came as a bolt from the blue.
这个消息犹如晴天霹雳。
与'bolt'同义，但更常用于文学或正式语境，语气更强
强调闪光现象，比'bolt'更宽泛，可指任何闪电闪光
侧重闪电的击打结果，常用于描述闪电造成的损害
grammar · medium
易错句子I saw bolt in the sky.
正确表达I saw a bolt in the sky.
“bolt”作为可数名词，前面需加不定冠词a。中文无冠词，易漏用。
grammar · medium
易错句子A bolt lightning hit the tree.
正确表达A bolt of lightning hit the tree.
“闪电”的正确表达是“a bolt of lightning”，不可省略介词of。
bolt指闪电的一道闪电，强调形状如螺栓；lightning是闪电的统称。
bolt是闪电，thunder是雷声，二者伴随但不同。
bolt强调闪电的条状形态，flash强调瞬间的光亮。
一道闪电
A bolt of lightning lit up the dark sky.
一道闪电照亮了黑暗的天空。
闪电
The lightning bolt struck the old oak tree.
闪电击中了那棵老橡树。
突然的闪电
A sudden bolt flashed across the horizon.
一道突然的闪电划过地平线。
晴天霹雳（意外事件）
His resignation came as a bolt from the blue.
他的辞职犹如晴天霹雳。
被闪电击中
The barn was struck by a bolt of lightning.
谷仓被闪电击中。
像闪电一样快
He ran out of the room like a bolt.
他像闪电一样跑出了房间。
晴天霹雳；意外事件
The news of his resignation came as a bolt from the blue.
他辞职的消息犹如晴天霹雳。
笔直地
She sat bolt upright when she heard the noise.
听到响声，她一下子坐得笔直。
冲向；急忙逃向
The cat made a bolt for the door when it saw the dog.
猫看到狗时急忙冲向门口。
我被一道闪电击中
The lyrics from AC/DC's song 'Thunderstruck' vividly portray the intensity of a lightning strike.
AC/DC歌曲《Thunderstruck》的歌词生动描绘了闪电袭击的强度。
Dictionary facts from ECDICT, WIKTIONARY.