有些动物白天不活动。
不活动会使关节僵硬,骨骼因此可能会开始退化。
Inactivity can make your joints stiff, and the bones may begin to degenerate.
咬鹃通常不活动。
Because it was in the 1950's or so, maybe the late 1940's, that people started to discover lithium, even though it had no natural function, it did do something in our bodies.
因为在二十世纪五十年代左右,可能是四十年代末期,人们开始发现锂,尽管不参与人体的正常生理活动,但是它确实会对我们的身体产生影响。
it's unfair for developed countries to force them to participate in anti-global warming activities.
发达国家强迫他们参与对抗全球气候变暖的活动是不公平的,
But I also have a weakness for the less common mental disorders that I think tell us something really interesting about mental life.
但我对那些不太常见的心理障碍,也并不是非常了解,不过我倒认为这些不常见的心理障碍,却向我们展示了心理活动有意思的一面
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