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1·This is the oldest Hebrew manuscript in existence.

这是现存最古老的希伯来语手稿。《牛津词典》

2·Today we're gonna review the overall reactor types that are presently in existence.

今天我们要回顾一下现有的反应堆类型。

3·It assures that the astronomical cycles have been in existence for billions of years.

这使人们确信天文周期已经存在了数十亿年。

4·All Y chromosomes in existence today are descended from a single ancestor's who is thought to have lived about 140,000 years ago.

现在存在的所有 Y 染色体都来自于一个被认为生活在大约14万年前的同一祖先。

5·These damaging frosts wouldn't happen if the wetlands were still in existence, just a tiny temperature difference can have major consequences.

如果湿地还存在的话，就不会发生这些破坏性的霜冻，正如仅一点微小的温差就会产生重大的后果一样。

6·While studying endangered species may provide some insights to scientists, the cost of keeping these animals in existence can not be justified for research purposes alone.

虽然研究濒危物种可能为科学家提供一些领悟，但仅仅为了研究的目的而饲养这些动物的话，其饲养成本是不合理的。

7·Nothing of all this is in existence now.

所有这一切，到今天，都已不存在了。

8·He lives in existence, in peace and in love.

他活在存在中，在平和中，在爱中。

9·In 1823 the city wall was still in existence.

1823年时城墙还存在。

10·Ruby is one of the most dynamic languages in existence.

Ruby是现存最动态的语言之一。