事前控制是指对工程准备阶段的控制，事中控制是指对工程施工过程的控制，事后控制是指工程结束后质量的控制。
Pre-control means the control of the project preparation stage, mid-control is the control of the construction process, after control means after the end of the project quality control.
这个阶段的运动主要用于运动员从高强度的训练或者受伤之后的恢复练习，或者是重要赛事前的热身准备。
This is used for recovery from harder training phases, injuries or in the lead up to major events.
这个阶段的运动主要用于运动员从高强度的训练或者受伤之后的恢复练习，或者是重要赛事前的热身准备。
This is used for recovery from harder training phases, injuries or in the lead up to major events.
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