There is a constant shuffling, as potential energy is transformed into kinetic or elastic energy, and then back again.
能量经常在我们身体里转来换去，从势能转为动能或弹性能，然后再转变回来。
There is a constant shuffling, as potential energy is transformed into kinetic or elastic energy, and then back again.
能量经常在我们身体里转来换去，从势能转为动能或弹性能，然后再转变回来。
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