Saturday, 9 March 2024

calisthenic 保健操

calisthenics is a form of exercise that uses a person's body weiht and requires little to no equipment. Examples of calisthenic exercises include pushups, crunches and burpees.

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defibrillator 心脏除颤器

defibrillator: devices that apply an electric charge or current to the heart to restore a normal heartbeat. If the heart rhythm stops due to...