one

963 篇文章
One trip could prove fatal.
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One trip could prove fatal. 一次跌倒就可能产生致命后果

Yellowstone is one of the coldest places in America.
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Yellowstone is one of the coldest places in America. 黄石国家公园 是美国最寒冷的地方之一

But there is one more chapter in the mammal story still to be told.
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But there is one more chapter in the mammal story still to be told. 但是哺乳动物的故事 还有一章仍待讲述

and allows one male... to approach.
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and allows one male... to approach. 允许一头雄鲸靠近

The mammals' journey into the oceans was a gradual one.
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The mammals' journey into the oceans was a gradual one. 哺乳动物进入海洋的过程是渐进式的

one in five of all mammal species is a bat.
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one in five of all mammal species is a bat. 所有哺乳动物中有五分之一是蝙蝠

One branched out and went in an entirely different direction.
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One branched out and went in an entirely different direction. 有一个分支 朝一个完全不同的方向发展

But there is one obvious opportunity.
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But there is one obvious opportunity. 但有一个明显的机会

though one the size of a car.
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though one the size of a car. 尽管体型与汽车相仿

One of the most violent events in our planet's history
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One of the most violent events in our planet's history 地球历史上最剧烈的事件之一