The baseball ended about eight or eight thirty when it grew dark.
棒球赛通常在8点或者8：30结束，那时天色渐暗。
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。
Over the eight-week period of the experiment the mice inthe first and third groups gained almost 50% more weight than those exposed tothe natural light-dark cycle.
经过八周的实验，相比较于第二组暴露在自然光——黑暗循环下的老鼠，第一组和第三组的老鼠体重的增长幅度高出50个百分点。
We say narrow crannies, and we can give no more just idea of those dark, contracted, many-angled alleys, lined with eight-story buildings.
我们说窄缝，是因为我们对那些阴暗、狭窄、转弯抹角、两旁夹着倾斜破旧的九层楼房的小巷找不出更确切的表达方式。
Half were housed in a standard light-dark cycle of 16 hours of light (at 150 lux) followed by eight hours of total darkness.
其中一半田鼠被封闭起来并做周期性的光照实验，每个周期先用150勒克斯的光照持续照射16个小时，然后完全黑暗持续16个小时。
Researchers raised baby mice from birth to weaning in either "summer" light cycles of 16 hours of light and eight hours of dark or "winter" cycles of eight hours of light and 16 hours of dark.
研究人员们将一组小鼠在“夏季”模拟光照周期下（光照16小时，无光照8小时）从出生培养至断乳期，而将另一组小鼠在“冬季”模拟光照周期下（光照8小时，无光照16小时）培养至相同时间。
To avoid puffy, bloodshot eyes, dark under-eye circles and a pale washed-out complexion — and for peak alertness and energy — experts say you need eight hours of sleep a night.
专家们说，人每天的正常睡眠应达到8小时，这样才能保证头脑清醒，精力充沛，避免出现眼睛浮肿、充血，黑眼圈，和面色苍白等现象。
In summer it doesn't get dark until after eight o 'clock.
夏天，直到八点过后，天色才暗下来。
Painted in mid-dark grey, the room features a high-gloss white-sprayed Techno table, eight Eames lobby chairs and a white sculptural credenza by Bross (also used for the first floor office spaces).
中旬深灰色画，房间配有高光泽白色喷涂Techno表，8埃姆斯大堂椅子，必须部署一个白色的雕塑书柜（也可用于在一楼办公空间）。
Painted in mid-dark grey, the room features a high-gloss white-sprayed Techno table, eight Eames lobby chairs and a white sculptural credenza by Bross (also used for the first floor office spaces).
中旬深灰色画，房间配有高光泽白色喷涂Techno表，8埃姆斯大堂椅子，必须部署一个白色的雕塑书柜（也可用于在一楼办公空间）。
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