insane and believed to be affected by the phases of the moon
lunatic的用法和样例:
例句
用作名词 (n.)
People in this town know him as a lunatic. 这个镇上的人们称他为疯子。
You're driving on the wrong side of the road, you lunatic! 你现在是逆行开车,你这个蠢材!
I really don't know what kind of man he really is; on one occasion, he is normal, and on another, he acts like a lunatic. 我真不了解他到底是怎样的人; 一会儿正常,一会儿又像个疯子。