If you describe something as crooked, especially something that is usually straight, you mean that it is bent or twisted.
the crooked line of his broken nose.
他折了的鼻梁的曲线。
A crooked smile is uneven and bigger on one side than the other.
lopsided
Polly gave her a crooked grin.
波莉向她歪斜着嘴一笑。
If you describe a person or an activity as crooked, you mean that they are dishonest or criminal.
a crooked cop.
一名坏警察。