Third, primary groups are fundamental because they serve as powerful instruments for social control.
第三，初级群体是基础，因为他们是社会控制的有力工具。
As for playing music, I am afraid now I can not play any instruments.
就演奏方面，遗憾的是，现在什么乐器我还都不会摆弄。
As for playing music, I am afraid now I can not play any instruments.
就演奏方面，遗憾的是，现在什么乐器我还都不会摆弄。
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