由于抢劫一直持续到夜里，旧金山市市长弗兰克·乔丹宣布全市进入紧急状态。
San Francisco mayor Frank Jordan declared a state of emergency in the city as the looting continued into the night.
现在他经常要加班到夜里10点，跟女友相处的时间减少。
Now he often works past 10 p.m., leaving him less time with his girlfriend.
去年《儿科学期刊》发表的一篇研究表明青少年的活动常常持续到夜里很晚。
A study published in the journal Pediatrics last year showed that teens kept up their activities late into the night.
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