Scientists have known for a long time that the light of day and the dark of night play important roles in setting our internal clocks.
科学家们很久以前就发现，昼夜光线的变化对于设置生物钟起着重要的作用。
Now when I stand alone for long time before the Pushkin's bust, which is my yearning to see day and night, I wipe gently off my hair, which has entirely become grey on my head.
此刻伫立在普希金铜像之前，我轻轻拂拭满头白发，胸中怎能不翻腾万千感慨？
It was a good deal darker now and very silent except for the sound of the waves on the beach, which Shasta hardly noticed because he had been hearing it day and night as long as he could remember.
现在天黑得多了，也十分寂静，只听见海滩上的涛声；沙斯塔可毫不注意涛声，因为就他能记事的岁月以来，他日日夜夜听到的就是涛声。
Think about it-long, irregular hours, day and night, many time zones, and all the time looking good and having a smile for happy and unhappy passengers alike.
想想看——工作时间漫长又不固定，日夜者得上班，横跨许多时区，随时都得呈现出体丽的模样，而且不论面对开心或不列心的乘客都得保持脸上的微笑。
Her during the day and night lighting changes there, but a very small corner of the city in a very small part, but a long history in the city for a short moment is very short.
她在白天和黑夜的光影变幻之中，只是城市很小很小一隅里很小很小的一份子，只是漫长的城市历史中很短很短的一瞬。
He swam with the fishes at the Sunshine Aquarium and after a long night delivering presents on Christmas Eve, he will go for another long soak on Christmas Day.
他在阳光水族馆和鱼儿们一起嬉戏。听说在圣诞前夜分发完礼品后，圣诞老人还将在圣诞节这一天再畅游一次“海底”。
Just think of it. Two hundred and forty brave young men were4 hurled into eternity every hour of every day, of every night, for four long years.
想想吧，长达四年的时间里，每一个昼夜的每一个小时，都有240个勇敢的生命坠入永恒的沉睡。
Just think of it. Two hundred and forty brave young men were4 hurled into eternity every hour of every day, of every night, for four long years.
想想吧，长达四年的时间里，每一个昼夜的每一个小时，都有240个勇敢的生命坠入永恒的沉睡。
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