负重运动能够使骨骼强壮，在老年时期就不会为人体自身机制所折磨。
Weight-bearing exercise helps keep bones strong and less likely to fall prey to the body’s own mechanisms in later age.
这段时间内，人们才真正需要喝咖啡，最重要的是，不会干扰到人体自身使我们保持清醒的内在机理。
Between those hours, the coffee is actually most needed, and, perhaps most importantly, will not interfere with our body's own essential mechanism for keeping us alert.
当艾滋病病毒进入人体后并不会很快使人体有异常的感觉。
When the AIDS virus enters the human body does not soon make the body an unusual feeling.
当艾滋病病毒进入人体后并不会很快使人体有异常感觉。
When the AIDS virus into the human body does not quickly make sense of the human body are abnormal.
当艾滋病病毒进入人体后并不会很快使人体有异常感觉。
When the AIDS virus into the human body does not quickly make sense of the human body are abnormal.
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