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- A billion years flicker by. 就这么闪烁着过了十亿年。
- But people have been eating according to flavor for upwards of a billion years. 但是人们已经根据滋味来吃东西吃了十亿年以上了。
- At room temperature, the odds of that happening are once in a billion years. 在室温条件下,发生那种情况的机会十亿年内只有一次。
- Subarctic temperatures will force us underground for a billion years. |到那个时候我们就要在地下住好几十亿年呢!
- Their ancestors have been eating according to flavor for upwards of a billion years. 他们的祖先已经根据滋味来吃东西吃了十亿年以上了。
- But people have been eating according to flavor for upwards of a billion years . 但是人们已经根据滋味来吃东西吃了十亿年以上了。
- An evolution machine generating a flamingo over a billion years from a bacterial blob is another. 进化机器经过十亿年由细菌液滴产生火烈鸟又是一例。
- Evidence indicates that Vesta underwent a tremendous splintering collision about a billion years ago. 有证据显示,大约在10亿年前,灶神星经历过非常猛烈的几乎可以导致其碎裂的撞击事件。
- There are also more individual organisms in total living now than a billion years ago, or perhaps even a million years ago. 与十亿年前,甚至是一百万年前相比,今天世界上生物个体的总数也有了巨大的增长。
- To date, SDSS astronomers have found four quasars that shone brilliantly when the universe was less than a billion years old. 到现在为止,SDSS的天文学家们已经发现了处在宇宙刚形成不到10亿年时期的明亮类星体。
- Livio: When we look back in time, using Hu le, we can see the universe, how it looked when it was le than a billion years old. 里维奥:我们用哈勃望远镜回顾过去,能看到宇宙在差不多十亿年前的样子。
- Livio: When we look back in time, using Hubble, we can see the universe, how it looked when it was less than a billion years old. 摩根 :人类可能从穴居时候起就一直在猜测宇宙是怎样开始的。
- Once the earth formed4.5 billion years ago, asteroid impacts periodically shattered and sterilized the planet's surface for another half a billion years. 没有人知道,但有一点是确定的:生命起源必然是个化学事件。
- The sometimes tubular, sometimes bean-shaped structures are remnants of an ancient bacterium captured by a one-celled organism more than a billion years ago, experts believe. 专家相信,这种时而管状、时而豆状的结构体是一百多万年前被一种单细胞生物吞噬的一种远古细菌所残留的。
- A billion dollars is a vast amount of money. 十亿元是一笔巨款。
- A billion years from now life on Earth may be primarily social, and stuffed with parasites and symbionts; and the world economy may be primarily a crowded network of alliances. 十亿年前地球上的生命起初可能就以群居为主,充斥着寄生和共生关系;其配置最初也大概是挤满了大小联合体的网状结构。
- Some computers can perform over a billion computation a second. 有些计算机一秒钟能完成超过十亿次运算。
- It has a half-life of about 41/2 billion years. 它的半衰期大约为45亿年。
- A star can persist like this for 10 billion years. 这样的恒星可以持续一百亿年以上。
- The solar system was formed 4.5 billion years ago. 太阳系是四十五亿年前形成的。