H-5：have a mind like a steel trap 头脑特别快
A：Do you know that John got the scholarship again?
A:你知道吗？约翰又得了奖学会。
B:No surprise. He has a mind like a steel trap and he works hard. too.
B:没什么好奇怪的。他头脑好用，又十分用功。
A:He must have a very bright future.
A:他将来一定前途远大。
