screw loose

基本解释

I knew a guy at college who had a screw loose somewhere-he was scared to death of catching a disease so he'd run off to wash his hands after he shook hands with anybody.
我在念大学的时候认识一个人，他有点不太正常。他非常害怕因染上病而死，所以他每次和别人握过手以后总是要马上去洗手。
Nicknamed the Freestyle King, Flip as a teen initially won the attention of the immortalized DJ Screw, who ushered the rapper into his loose-knit Screwed Up Click.
给自由式国王，轻碰起绰号如同青少年最初地被赢取不朽的DJ 螺丝，的注意迎接交谈者入他的宽松编织弄糟点击。
Everybody thought these two brothers had a screw loose somewhere when they built this silly-looking machine and claimed it could carry a man up in the air.
这句话的意思是：“当那兄弟两造了那个看起来挺怪的机器，还说那机器能让人在天上飞的时候，每个人都认为这兄弟两不正常。