main

主要的、首要的、最重要的

The main reason for the delay was the bad weather.

延误的主要原因是天气不佳。

全力的、竭力的旧式

He pulled the rope with his main strength.

他用尽全力拉那条绳子。

干管、总管、主管道

A burst water main flooded the whole street last night.

昨晚一条自来水干管破裂，淹了整条街。

市电、电源英式，常用复数

Unplug the heater from the mains before you clean it.

清理暖气机之前，先把插头从电源拔掉。

大体上、基本上、总的来说

In the main, the customers seem happy with the new menu.

大体上，客人似乎对新菜单很满意。