1. hoodlum
2. rogue
3. gangster
4. immoral behavior
例句与用法:
1. 那个流氓吓唬小男孩，让他掏出了所有的钱。
The rascal hectored the boy into taking out all of his money.
2. 那个流氓靠行骗为生。
The rascal lives on the credulity of the people.
3. 她本来会嫁给他的，但知道他是个流氓后，她就离开他了。
She would have married him, but when she learned that he was a rascal, she parted with him.
4. 我要是逮住这个流氓, 非狠狠揍他一顿不可!
If I ever catch the rascal I'll really wallop him!
hooligan