good ear

敏锐的听觉

A:Have you met John?

A:你见到约翰了吗?

B:Yeah. He came back from America last week.

B：是的，他上个星期刚从美国回来。

A：Have you noticed how fulently he speaks English! He has only lived in America for less than three months.

A:你有没有注意到他现在能讲一口流利的英语?他在美国才住了不到三个月。

B:He must have a good ear.

B：他听觉一定非常敏锐。