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  • 匿名
关注:1 2013-05-23 12:21

求翻译:How much sleep do we need ? We are all different. Some people need only three hours of sleep a night. Others need ten hours of sleep a night. Most Americans sleep an average(平均数) of seven to eight hours a night. After age fifty, the average sleep time goes down to 6.5 hours a night.是什么意思?

待解决 悬赏分:1 - 离问题结束还有
How much sleep do we need ? We are all different. Some people need only three hours of sleep a night. Others need ten hours of sleep a night. Most Americans sleep an average(平均数) of seven to eight hours a night. After age fifty, the average sleep time goes down to 6.5 hours a night.
问题补充:

  • 匿名
2013-05-23 12:26:38
我们需要多少睡眠?我们是完全不同的。有些人需要只有三个小时的一夜的睡眠。另外一些人需要十个小时的睡眠一晚。大多数美国人睡眠 average(平均数) 晚上七至八小时。五十一岁以后, 平均睡眠时间去下一晚 6.5 小时。
 
 
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