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Occasionally in the cell divisions that occur during the formation of eggs and sperm, an unequal exchange of parts of chromosomes leads to production of a gamete that possesses a chromosome containing extra copies of one or more genes.
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卵子与精子形成的过程中，偶尔会在细胞分裂时出现部份染色体互换不对等的状况，使得某个配子的染色体多出一个或数个基因。 |
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Occasionally one of these fragments is read and transmitted; it's part of a movie that someone is watching in Helsinki.
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偶尔，其中一个片段会被读取并传送出去；它是芬兰的某个人正在看的电影的片段。 |
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Occasionally people would laugh at them.
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偶尔也有人笑话他们。 |
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Occasionally she had to take sleeping pills.
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她偶尔不得不吃安眠药。 |
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Occasionally the sound fades out and the action shifts into slow motion, giving you the eerie sense of sharing the experience of a soldier in shock.
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有时声音减弱，行动变成慢动作，给你一种奇异的感觉，感受一个身处惊恐之中的士兵的经历。 |
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Occasionally there would be the days when my depression would dissipate temporarily.
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偶尔也有这样的日子，我的沮丧之情会暂时消散。 |
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Occasionally they are left with some bread buns, raw fish heads or tail They have no access to clean water, either.
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有时只是喂它们一些方便面调料拌馒头和生鱼头及鱼尾。 |
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Occasionally we would go to concerts together.
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偶尔我们会一道去听音乐会。 |
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Occasionally you could make a friend, but it was only when you were exceptionally lucky, or exceptionally unlucky, depending on your perspective, that you would meet some one who could spark the fire inside you, which burnt like hell.
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某些时候能够交个朋友，可只有在非常幸运——或者非常不幸运，就看你从哪个角度说了——的时候你才会与一个人擦出火花，之后就像炼狱一般燃烧起来。 |
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Occasionally, HAV is also acquired through sexual contact (anal-oral)。。
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偶尔，肝炎可以通过性接触（肛门--口）来传染。。 |
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Occasionally, I've asked him to redo a take: “Oh, my chérie, if you insist!”
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偶尔我会要求他再来一遍，“哦，我的雪儿，如果你坚持这么做的话。” |
