shrewd
单词辨析：
指头脑敏捷、精明老练的，强调思维能力很强，办事巧妙，能圆滑地处理人际关系等。
He is a smart retailer.
他是个精明的零售商。
Your son is smart, so he'll do well in life.
你的儿子很机灵，一定会很有前途。
Bobby is so smart that he will jump at this opportunity.
博比很有头脑，他会迫不及待地接受这个机会的。
通常指年轻人或小孩聪明机灵的，强调思维敏捷、反应迅速。
He is an exceptionally bright boy.
他是个特别聪明的小伙子。
Some of my students are very bright.
我的一些学生非常聪明。
指学习和理解能力强的，强调机敏、能干。
A clever woman can't make a meal without rice.
巧妇难为无米之炊。
The clever fox escaped the hunter.
聪明的狐狸逃脱了猎人的追踪。
He was clever to arrive at the answer in half a minute.
他很聪明，半分钟就找到了答案。
指才智过人、善于作出正确判断的，强调思维清楚、理解力强。
He was as intelligent a child as ever you were.
他原来是个和你一样聪明的孩子。
In fact, it is sexist to say that women are less intelligent than men.
事实上，所谓女性没有男性聪明的说法是对性别的偏见。
指善于判断情况或洞察他人心思的。
My boss is a shrewd businessman.
我的老板是个精明的生意人。
He is shrewd in business.
他做生意很精明。
A shrewd man knows what he can say and what he can't.
一个精明的人懂得什么能说，什么不能说。
指决定或行动是明智的；也指人因阅历丰富而有智慧及谋略的，强调有判断力，能明辨是非。
No man is wise at all times.
人难以聪明一世。
They have made a wise decision.
他们作出了一个明智的决定。
It is wise to keep out of debt.
不借债是明智的。
相关例句：
My mother had consequently made her own shrewd deductions about what was going on in my marriage.
我母亲已据此对我的婚姻状况作出了她自己精明的推断。
She's a shrewd politician.
她是个精明的政治家。
Does all this make you a shrewd consumer?
而所有这些真的使你成为一位精明的买家吗？
Her brother is a shrewd businessman.
她兄弟是个精明的生意人。
One shrewd thing he did, which indicated the foresight and subtlety of the man.
他干的那件精明事，表现了这个家伙的深谋远虑和巧妙干炼。
You made a very shrewd decision to sell when you did.
你做了一个非常精明的结论：做了就卖。