order (v.)
点(菜)、命令

例句：
I ordered a hamburger and some fries.
我点了一个汉堡和薯条。

cost an arm and a leg
价格非常昂贵；费用很大
 
例句：
Eating in hotels costs an arm and a leg.
在饭店里吃饭费用很大。

The sooner, the better.
越快越好。 

对话：
A: You'd better apply for your passport now. The sooner, the better.
B: All right. I'll follow your advice.