例句-1: Young man, unless you start turning in your assignments on time and pull up your test scores, I have to tell you that you are on thin ice in this class. Right now you're very close to failing.
例句2: As a professor of philosophy I don't know much about movies so I was silly to accept an invitation to speak on American films as an art form last week. I felt I was really on thin ice during the speech, scared to death of making a fool out of myself.
例句3: The trouble with Harry is that he is so thin-skinned. He does good work, but he must feel very unsure of himself. Ask him a friendly question about how his work is going and he thinks you're criticizing him.
例句4: You shouldn't be so thin-skinned. You've changed jobs three times in three months and every time it was because somebody tried to correct your mistakes. Son, everyone has to listen to criticism sometimes. It's the only way to learn and grow.