"Tonight," she said. "Six hours ago."
“今晚，”她继续说道，“6个小时之前。”
Some five years ago, high school seniors in America generally spent more than six hours a day on electronic devices.
大约五年前，美国高三学生每天花在电子设备上的时间一般超过六小时。
Those ages 8 to 18 spend more than seven and a half hours a day with such devices, compared with less than six and a half hours five years ago, when the study was last conducted.
与五年前每天花费不到6个半小时的时间相比，那些年龄在8到18岁之间的年轻人如今在完成学习后，每天用在电子产品上的时间超过了7个半小时。
Most of us learned years ago that our bodies need 7-8 hours of sleep a day, but did you know that six hours or less triples our chance of an accident?
我们当中大多数人从小就知道人体每天需要7到8小时的睡眠。你可知道，如果睡眠少于6小时，发生意外的几率就会增加到3倍？
Is it 6:00 yet? It was six o'clock three hours ago.
现在到六点了吗？现在已经是九点了。
Is it 6:00 yet? It was six o'clock three hours ago.
现在到六点了吗？现在已经是九点了。
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