If you're already fit, do classic push-ups. For both types.

如果你刚开始一个健身计划，可以进行碰膝盖的改良式俯卧撑，如果已经适应，进行传统模式的俯卧撑。

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Draw and push devices, fit for heavy goods.

抽拉式引出装置，适合吊装重物。

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Draw and push devices, fit for heavy goods.

抽拉式引出装置，适合吊装重物。

youdao