力量训练比重量训练更高一级。
Strength training is a little more advanced than just simple weight training.
假设已知一个物体的重量和比重，我们就能算出它的体积。
Granted the weight and the specific gravity of a body, we can calculate its volume.
假设已知一个物体的重量和比重，我们就能算出它的体积。
Granted the weight and the specific gravity of a body, we can calculate its volume.
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