OMG!美语 To Be On Thin Ice!

大家好！……美语里和冰有关的短语有什么？to be on thin ice 如履薄冰，做危险的事I'm afraid to ask my boss for time off. He relies on me to do a lot of stuff in the office every day. Who could replace me?我不敢跟老板请假。每天办公室都有很多事靠我处理。谁能替我呢？You might be on thin ice if you ask for too much time off.如果你请假太多就真的危险了。