Sound is caused by vibrations. A vibration is a back and forth movement.

声音是由振动引起的。振动就是往复运动。

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And the feedback on organization movement has been set forth too.

并阐述了虚拟企业的组织运行反馈。

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And the feedback on organization movement has been set forth too.

并阐述了虚拟企业的组织运行反馈。

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