The summer after 7th grade, students spend three weeks on a college campus studying advanced math for seven hours a day.
七年级后的那个夏天，学生们要在大学校园里待上三周，每天学习七个小时的高等数学。
You can and will work at a desk for seven hours straight, routinely.
你能够做到每天七个小时坐在书桌前。
Cooke's four companies of guards there held out for seven hours against the fury of an army.
库克的四连近卫军，在一军人马猛攻之下，坚持了七个钟头。
Thee police grilled the suspect for seven hours and still couldn't get a confession out of him.
这个警察拷问了嫌疑人七个小时，但是仍然不能让他认罪。
Tests showed that the catalyst remains active for seven hours before it becomes choked up with solid carbon.
测试表明，这种催化剂若没有被碳消耗则7小时后仍具有活性。
It's probably best to aim for seven hours of quality shut-eye every night, says a new study led by an Indian-origin researcher.
印度科学家的最新研究表明7小时或许是最佳的睡眠时常。
"Nothing, " said Harry. "Watched the Ministry entrance for seven hours. No sign of her. Saw your dad, though, Ron. He looks fine. "
“没什么了，”哈利说，“在魔法部门口侦察了七个小时，没发现那女人，但见到了你爸爸，罗恩，他看上去挺好的。”
Wildlife photographer Mark Hancox waited for seven hours in a cramped hide on the shores of Loch Garten, Scotland, before the bird caught its prey.
野生动物摄影师马克·汉考克斯在一个狭窄的藏身处等了7个小时，才等到这鸟抓住了猎物。拍摄地点为苏格兰加滕湾的海边。
So two weeks ago I stood in the severely depleted River Lathkill in Derbyshire assisting with a brown-trout rescue mission as horizontal rain belted us for seven hours.
因此两周前我因为协助一项褐鳟鱼救助任务而站在德比郡那条严重枯竭的Lathkill河流时，我们遇到了持续7小时的暴雨。
For every one hour, they will spend on a spacewalk, astronauts need to train seven hours in the pool.
宇航员在太空漫步中花费的每一个小时，都是他们在泳池里训练7个小时换来的。
He has downloaded seven news apps, through which he reads for one or two hours a day.
他下载了七个新闻的应用程序，每天通过这些程序阅读一到两个小时。
Usually, you must sleep for at least seven to eight hours every day, or you will get dark circles under the eyes.
通常，你必须每天至少睡7-8小时，否则你会有黑眼圈。
Officers grilled him for more than seven hours, insisting from the start that he had committed the crime.
警官们拷问了他七个小时，从一开始就认定是他犯下了这宗罪。
The doors were locked on the outside a little before seven in the evening, and would stay locked for the next twelve hours.
门从外面上了锁，时间是差几分七点，也就是说，我们得在这些格子间里被锁上十二个小时。
The subjects wore accelerometers which measure the intensity of their physical activity 14.6 hours a day for seven days.
受测者携带了运动测量仪器，以测取他们在七天之内14.6小时之中的运动量。
You don't talk about fight club because except for five hours from two until seven on Sunday morning, fight club doesn't exist.
你不能跟别人提起搏击会，因为搏击会只在礼拜六凌晨两点到礼拜天早上七点那五个小时内才存在。
Female workers pregnant for seven months or more shall not be arranged to extend their working hours or to work night shifts.
对怀孕七个月以上的女职工，不得安排其延长工作时间和夜班劳动。
Assad was famous for long meetings-he could go on for six or seven hours without taking a break.
阿萨德以开会时间长而知名——他可以开六七个小时的会而不需要休息。
Out of the seven hours I spent in the park, I was either lining up for or spending time in various means of transportation for about four hours.
我在公园里待了七个小时，其中有四个小时不是在排队，就是在坐各种各样的交通工具。
How do you boost incomes for nomads in western China who might live seven hours from any roadside, much less a marketplace?
你该如何增加中国西部地区牧民的收入？这些人居住的地方可能距离最近的公路也有七个小时车程，更不要说去集市了。
Having a husband creates an extra seven hours of housework each week for women, according to a new study.
一项最新研究发现，女人有了老公后每周得多做七个小时的家务活，而对于男人而言，结婚则意味着每周少做一小时的家务。
The average sleep duration was seven hours and 53 minutes, against the nine or more hours of nightly sleep recommended for adolescents.
没有遵守推荐夜间睡眠时间九小时或更长时间的青少年，平均睡眠时间为7小时53分钟。
Her team randomly assigned seven men and seven women to play two action videogames for a total of 50 hours, with no more than two hours of play per day.
她的小组随机指派7名男性和7名女性玩两款动作游戏，每天游戏时间不超过2小时，总时间为50个小时。
Researchers found the ideal amount of sleep duration of seven hours per night resulted in the highest score for every cognitive measure, followed closely by six hours of nightly sleep.
结果发现，每晚睡眠7小时的中年男女在所有认知能力测试中得分最高，其次是每晚睡眠6小时的中年男女。
Researchers found the ideal amount of sleep duration of seven hours per night resulted in the highest score for every cognitive measure, followed closely by six hours of nightly sleep.
结果发现，每晚睡眠7小时的中年男女在所有认知能力测试中得分最高，其次是每晚睡眠6小时的中年男女。
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