虽然睡眠时间短，但他们精力充沛、外向活泼、乐观向上，而不是疲惫而且脾气坏的“后进生”。 他们每晚只睡四到五个小时，却过得快乐健康。
Rather than being tired, bad-tempered under-achievers , they are an energetic, outgoing and optimistic group who can happily and healthily get by on just four or five hours of shut-eye a night.
他们认为人们应该参加比较活泼的运动，因为不仅可以娱乐而且有益于健康。
They think people should take part in active sports, because they are not only for fun but also for health.
虽然睡眠时间短，但他们精力充沛、外向活泼、乐观向上，而不是疲惫而且脾气坏的“后进生”。他们每晚只睡四到五个小时，却过得快乐健康。
Rather than being tired, bad-tempered under-achievers, they are an energetic, outgoing and optimistic group who can happily and healthily get by on just four or five hours of shut-eye a night.
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