在挤压循环开始时铝锭在压缸内太冷，在循环末尾时铝锭又变为太热。

At the beginning of the cycle, the aluminum in the press container is too cold and at the end of the cycle the aluminum is too hot.

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地壳在这里碰撞挤压，上涌的炙热岩浆变冷，又形成了新的地壳，这种伟大的循环过程就是所谓的板块构造。

Here Earth's crust pulls apart, and upwelling magma cools and forms new crust that spreads away from the ridge in the great recycling process known as plate tectonics.

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因为踮脚时双侧小腿后部肌肉的收缩挤压，会促进锻炼者下肢血液的回流，加速血液循环，可防止下肢静脉曲张。

Because when tiptoe, the bilateral muscle of calfs can contract and squeeze, will promote the exerciser by the return of lower extremity blood, accelerate blood circulation, prevent varicose veins.

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