知人知面不知心
It's easy to know men's faces, but not their hearts.

知己知彼百战百胜
Know your enemy and know yourself.

空中楼阁
castles in the air

金科玉律
the gold rule

奇装异服
a fantastic garb

明辨事非
to distinguish right from wrong

雨后春笋
like bamboo shoots after a spring shower

雨过天青
After a storm comes a calm.

秀才不出门能知天下事
A scholar does not step outside his gate, yet he knows the happenings under the sun.

事实胜于雄辩
Facts are most convincing.  

小Car笔记：

garb：打扮，装束，外表 【常用词语】prison garb：囚衣，犯人衣服
shoots：嫩芽 【常用词语】①rice shoots：稻秧苗，禾秧，秧苗  ②bamboo shoots：竹笋
under the sun：天下，究竟

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