B1 larger, more important, or having more influence than others of the same type主要的;最重要的;最大的
More examples
They dropped me off at the main entrance.
Press Esc to return to the main menu.
You'll be examined in three main areas; speaking, listening and reading comprehension.
The main crops grown for export are coffee and rice.
The opportunity to travel is one of the main attractions of this job.
[ C ] a large pipe that carries water or gas, or a wire carrying electricity, from one place to another, to which a house can be connected(输送水、煤气的)主管道,总管;(输送电力的)干线
the system of pipes or wires that carry water or electricity into a house, or the pipes that carry sewage away from a house(输送水、电的)管道系统;下水道系统
the place at which outside pipes or wires carrying water, electricity, etc. connect with the system inside a house or building内外管道相接处;总阀门;总电源
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