The number of copies of a starch-digesting gene in both humans and dogs increased in the generations following the invention of agriculture.

在农业发明后的几代中，人类和狗的淀粉消化基因拷贝数都在增加。

A newspaper's circulation is the number of copies it distributes per day. Well, selling more advertising space is one way, isn't it?

报纸的发行量是指每天销售出版报纸的份数。报纸可以采取卖出更多广告位的方式，不是吗？

" Circulation" refers to the number of copies of a magazine or a newspaper that people buy.

“发行量”是指人们购买一份杂志或一份报纸的份数。

The other is to reduce the number of copies considering the fact that some students can share.

另一个是考虑到部分同学可以分享，减少份数。

A genome map showed that Thiomargarita magnifica has lost some genes needed for cell division and has more than the usual number of copies of genes responsible for cell lengthening.

基因图谱显示，华丽硫珠菌已经失去了一些细胞分裂所需的基因，拥有了比通常数量更多的负责细胞变长的基因副本。

" Circulation" is the number of copies of a newspaper or magazine that are sold; it could also refer to the number of people who read a particular newspaper or magazine.

“发行量”是报纸或杂志的售出份数；它还可以指阅读特定报纸或杂志的人数。

Discussing his well-known admiration of Czech writer Franz Kafka, Yu Hua explains the challenge of finding Kafka's works as a young aspiring writer due to the limited number of copies being sold in China in the 1980s.

谈到他对捷克作家弗朗茨·卡夫卡公开的仰慕，余华解释了作为一名年轻的、有抱负的作家，由于 20 世纪 80 年代在中国销售的数量有限，很难找到卡夫卡的作品。

Magnetic-resonance imaging (MRI) showed that the brain's total volume increases with the number of copies of the affected chromosomal region (so is smaller than normal with the deletion, and larger than normal with Dup7).

磁共振成像 (MRI) 显示， 大脑的总体积随着受影响染色体区域的拷贝数增加而增加（所以比缺失的正常体积小，而 Dup7 的体积比正常体积大）。