【shrewd】

例句：

1. He was too shrewd to believe that it must exist.

他到是不至于愚蠢到相信那一定会存在。

2. I became very rich by making some shrewd investments.

我变得十分富有，由于我做了一些精明的投资。

【intensly】

构词：intense→intensely

例句：

1. Extracting them would be intensely difficult.

提取它们是极为困难的。

2. Intensely hard rock might well make tunneling extremely difficult and far too costly to even

contemplate.

密实坚硬的岩石使得隧道挖掘过于艰难，造价惊人，令人望而却步。

【stage】

英英：plan, organize, and carry out (an event)

例句：

1. They were going to stage a large-scale money collecting.

他们筹划举办一个大型募捐活动。

2. Angry parents at several destroyed schools are beginning to stage small demonstrations.

几所被毁学校中，悲愤的家长们正准备筹划一次小型的*活动。

3. They decided to stage a general strike.

他们决定举行总罢工。