及物动词
不及物动词
名词
动词用法（VERB USES）
1. (使)破裂;(使)裂开;(使)断裂
If something hard cracks, or if you crack it, it becomes slightly damaged, with lines appearing on its surface.
2. (使)发出爆裂声;(使)噼啪作响
If something cracks, or if you crack it, it makes a sharp sound like the sound of a piece of wood breaking.
3. 重击;猛击
If you crack a hard part of your body, such as your knee or your head, you hurt it by accidentally hitting it hard against something.
4. 打破;砸开;砸碎
When you crack something that has a shell, such as an egg or a nut, you break the shell in order to reach the inside part.
5. (尤指经过反复思考)找到…的解决办法，破译(密码)
If you crack a problem or a code, you solve it, especially after a lot of thought.
6. (因压力大而)失控，崩溃，瓦解
If someone cracks, they lose control of their emotions or actions because they are under a lot of pressure.
7. (因感情强烈而嗓音)变嘶哑，变沙哑
If your voice cracks when you are speaking or singing, it changes in pitch because you are feeling a strong emotion.
8. 说(笑话);开(玩笑)
If you crack a joke, you tell it.
9. see also: cracked;cracking
10. 不如别人说的那么好
If you say that something is not all it's cracked up to be, you mean that it is not as good as other people have said it is.
1. the act of cracking something
2. a usually brief attempt
e.g. he took a crack at it
I gave it a whirl
Synonym: flinggopasswhirloffer
3. a purified and potent form of cocaine that is smoked rather than snorted
highly addictive
Synonym: crack cocainetornado
4. a narrow opening
e.g. he opened the window a crack
Synonym: gap
5. a blemish resulting from a break without complete separation of the parts
e.g. there was a crack in the mirror
6. witty remark
7. a sudden sharp noise
e.g. the crack of a whip
he heard the cracking of the ice
he can hear the snap of a twig
8. a long narrow opening
Synonym: cleftcrevicefissurescissure
9. a long narrow depression in a surface
Synonym: crevicecrannyfissurechap
10. a chance to do something
e.g. he wanted a shot at the champion
Synonym: shot