In one study, more than half the people who meditated two and a half hours a week for eight weeks reported a whopping 54% reduction in stress.
一项研究表明，在每周冥想两个半小时并且持续八周的试验中，有多于一半的人表示自己压力减少了54%之多。
Normal people need eight to eight-and-a-half hours of sleep. These people sleep five and a half to six.
一般人需要八到八个半小时的睡眠，而这些人只需要睡五个半到六个小时。
Most people are not aware that caffeine has a half life of up to eight hours and can affect not only your ability to fall asleep, but also the quality of sleep you are getting.
大多数人都不知道，咖啡因有一个长达八小时的半衰期，不仅会影响你的入睡能力，而且还会影响你的睡眠质量。
Normal people need eight to eight-and-a-half hours of sleep.These people sleep five and a half to six.
一般人需要八到八个半小时的睡眠，而这些人只需要睡五个半到六个小时。
That could mean that people who reported sleeping eight hours were really sleeping around seven and a half hours, which would bring them into the study's lower risk category.
这就意味着那些汇报8小时睡眠者实际睡了7.5个小时左右，而这就会把他们列入该项研究的低危险率一类。
The fifth book, Harry Potter and the Order of the Phoenix, goes on sale in twenty-eight and a half hours. It’s confidently expected to have the biggest 2)print run in history.
这个系列的第五部《哈利·波特与凤凰社》28个半小时后就上市了，几乎可以肯定的是这将会是历史上印量最大的书。
During eight hours of sleep, people dream for a total of one and half hours on the average.
在睡觉的八小时，每个人平均做梦的总时间为一个半小时。
The flight was eight and a half hours and we all just wanted to get there to start the trip of a lifetime.
飞行时间为八个半小时，所有人都盼望着在那里展开一次毕生难忘的旅程。
He set up an experiment and asked his volunteers to spend a week sleeping around seven and a half hours to eight hours a night and the next sleeping six and a half to seven hours.
他着手进行了一项实验，要求志愿者们每晚睡大约七个半到八个小时，一个星期后再将睡眠时间调整为六个半到七个小时。
Before they were famous, they played full time for two and a half years in Hamburg, often for eight to 12 hours a day.
成名前，他们在汉堡做了两年半的全职演唱，经常一天要唱8到12小时。
Ying-Hui Fu: When these people have this mutation, their sleep amount is less. Normal people need eight to eight-and-a-half hours of sleep. These people sleep five and a half to six.
傅颖慧：当这些人有这种基因变化时，他们的睡眠量较少。一般人需要八到八个半小时的睡眠，而这些人只需要睡五个半到六个小时。
Italian women not only spend at least eight hours a day at work, they do around 90 minutes of housework, are busy cooking for a further half-hour and dedicate at least 20 minutes each day to exercise.
意大利妇女不单只要上至少8小时的班，还要花上大约90分钟来干家务、用半个小时做饭和用至少20分钟进行锻炼。
Italian women not only spend at least eight hours a day at work, they do around 90 minutes of housework, are busy cooking for a further half-hour and dedicate at least 20 minutes each day to exercise.
意大利妇女不单只要上至少8小时的班，还要花上大约90分钟来干家务、用半个小时做饭和用至少20分钟进行锻炼。
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