研究表明，睡眠债会损害感知能力和身体的活动能力，但是，情绪更会受影响。
Studies have shown that cognitive skills and physical performance are impaired by sleep debt, but mood is affected even more.
尽管他的这种ALS病使他身体丧失实际的活动能力，他的勇气和幽默却仍然完美无缺，他的智力任其自由漫游。
While ALS has made Hawking a virtual prisoner in his own body, it has left his courage and humor intact his intellect free to roam.
尽管他的这种ALS病使他身体丧失实际的活动能力，他的勇气和幽默却仍然完美无缺，他的智力任其自由漫游。
While ALS has made Hawking a virtual prisoner in his own body, it has left his courage and humor intact his intellect free to roam.
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