have a long head(or be long-headed)
聪明的
A:He has a long head. I bet he will do well in his business.
A:他很精明，我打赌他会将生意做得很红火。
B:He does, he started five years ago and now ends up the richest amjong us.
B:的确，他五年前开始做生意，现在是我们当中最富有的一个。
A:When we were students, he has no good in any subject.
A:学生时代，他并没有哪一门功课非常出色。
B:It seemed to be useless to study well when we were young if we examine his case.
B:就他的例子来看，好像年轻时学习出色并没有什么用。