You always weigh less in the morning.
早晨体重总是会轻一些。
Rubber tracks weigh less than half as much as their steel counterparts.
橡胶履带不到钢制履带的一半重。
And the fact is that cigarette smokers do weigh less on average than nonsmokers.
实际上，吸烟者通常的确比不抽烟的人体重要轻。
You weigh about 90% less in the pool.
在游泳池里，你的体重会减少90%。
You weigh about 90% less in the pool.
在游泳池里，你的体重会减少90%。
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