know what's what

1 You have to know what's what and when to draw the line.

你必须搞清状况以及自己的底线。

2 You've old and pigheaded. You don't know what's what.

你真被迷了,老昏了,一点也不会想了.

3 I guess I'm your auntie and I know what's what.

不管怎么说,我总是你的姑妈,也不是不明事理.

4 You're old enough now to know what's what.

你已经不小了,应该知道好歹了.

5 In the choice you need to know what's what.

在选择上也需要您心里有数.

6 If you want to know what's what.

你需要几个星期的功夫才能熟悉这项工作.

7 With all his experience in the trade, he should know what's what where wines are concerned.

根据他的经商经验, 他应该有分辩酒类好坏的能力.

8 More than that, we shall have a tempest, or I don't know what's what.'

不止大风, 我们要遇到的是一场暴风, 不然就算我看走眼了.

1 懂行

know the ropes learn the ropes know your stuff

2 有头脑

intelligent

3 有常识

sensible well-balanced commonsense gumptious

4 老练

old mellow sophisticate tact sophisticated practised sophistication veteran seasoned tactful gumption

5 精明

fly keen clever acute astute shrewd calculating penetrative sagacious acumen sagacity