He got the crackpot that the president is a Communist.他疯狂地以为总统是共产党员。She was no more a crackpot than the rest of us.她和我们一样正常。Some crackpot in a clown suit is out there directing traffic.有个穿着小丑衣服的古怪家伙正在那边指挥交通。That crackpot thinks his neighbors are aliens.那位疯子认为他的邻居是外星人。