Think of one line. Think of a group of lines Here's one sound.
想想一行乐句是什么样的，一组呢，这是一个音？
Spot protection, group of lines marking, resistance electric capacity reason protection;
焊点保护、线束标识、电阻电容的绝缘保护；
A small group of soldiers were parachuted behind enemy lines.
一小队士兵被空降在敌人后方。
A small group of soldiers were parachuted behind enemy lines.
一小队士兵被空降在敌人后方。
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