1.
Know the weather, know the terrain, and your victory will be complete.
知天知地，胜乃不穷。
2.
When one has a wide range of knowledge, one can then know the mandate.
知天所为，知人所为，然后知道，知道然后知命。
3.
Hence the saying: If you know the enemy and know yourself, your victory will not stand in doubt; if you know Heaven and know Earth, you may make your victory complete.
故曰:知己知彼,胜乃不殆﹔知天知地,胜乃可全。
4.
between you and me and the gatepost
天知地知，你知我知
5.
In the strictest confidence.
你知我知，天知地知表示非常信任
6.
Summer burst upon us before we realized it.
夏天不知不觉地到来了。
7.
Goodness knows who it can have been.
天知道那可能是谁。
8.
"Fo' Gawd, Mist' Rhett, Ah--"
"天知道，瑞德先生，我----"
9.
He is living God knows where.
天知道他住在哪儿。
10.
The airport has advised of thick mist today
机场已通知今天有浓雾。
11.
The notice says (that) there will be no school tomorrow.
通知上写明明天没有课。
12.
I can know this evening.
今天晚上我会知道的。
13.
She dabbles in astronomy.
她对天文学一知半解。
14.
Tomorrow is the holiday. Do you know?
明天放假，你知道吗？
15.
You know, today is Lantern Festival.
你知道，今天是元宵节。
16.
a countryman's weather lore
农村人对天气的知识
17.
Tiangongkaiwu zhong de huaxue zhishi
《天工开物》中的化学知识
18.
If you've a friend afar who knows your heart, distance can't keep you two apart
海内存知已,天涯若比邻