肌肉收缩是重复收缩，交叉桥的产物。
Muscle shortening is the product of repeated contraction of the cross bridges.
完全收缩你的腹部以便你尽可能的呼出你肺部的空气。重复十次。
Contract your stomach completely so that you push as much air out of your lungs as possible.
AOAGO笔记本电脑冷却垫能持续工作八小时以上，自然条件下颗粒或晶体在垫内会随着气温下降而收缩，恢复原始状态，重复使用。
AOAGO cooling mat can work continually over 8 hours. When coming back to the natural condition, it resumes its original shape and can be used repeatedly.
AOAGO笔记本电脑冷却垫能持续工作八小时以上，自然条件下颗粒或晶体在垫内会随着气温下降而收缩，恢复原始状态，重复使用。
AOAGO cooling mat can work continually over 8 hours. When coming back to the natural condition, it resumes its original shape and can be used repeatedly.
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