a fly on the wheel

1. He is a fly on the wheel.
他是个狂妄自大的人。

来自《简明英汉词典》

2. She could not help thinking that he was breaking a fly on the wheel.
她不禁认为他是在小题大做。

来自《简明英汉词典》

3. She could not help thinking that he was crushing a fly on the wheel.
她不禁认为他是在小题大做。

来自《简明英汉词典》