Meanwhile, an egg contains thousands of mitochondria, each containing multiple copies of the mitochondrial DNA.

同时，一个卵含有成千上万的线粒体，每个都含有多组线粒体 DNA。

With the invention of block printing, it became possible to quickly create multiple copies of these Tipaos.

随着木版印刷术的发明，人们可以快速地复制出这些印刷品的多个副本。

I think we should get some of the ones that go with our latest course books and also make multiple copies.

我认为我们应该引进一些与最新课本配套的资源，并且多留一些副本。

From online campaigns to elevate their chosen idol's social media rankings to buying multiple copies of their albums or even donating to charities in their idol's name, the groups are highly active online.

无论是能够提升自家偶像社交媒体排名的网络活动，还是大量购买专辑，甚至以偶像的名义向慈善机构捐款，这些饭圈团体在网上都非常活跃。

But as mass printing started to pick up steam in the 18th century and especially 19th century, it suddenly became possible to have multiple copies of the same book and to lend those copies out.

但在18世纪，尤其是19世纪，大规模印刷开始兴起，同一本书突然有了多本并可以外借的可能。

As to why Oriental hornets have multiple copies of this pivotal gene, Dr Bouchebti speculates that it has to do with a close relationship that the hornet has with the fungus Saccharomyces cerevisiae, also known as brewer's yeast.

至于为何东方大黄蜂拥有这种关键基因的多个副本，Bouchebti 博士推测，这与大黄蜂与酿酒酵母（又称啤酒酵母）之间的密切关系有关。