我们的免疫系统正在杀死数以十亿计的细菌。

Our immune systems are killing billions of germs right now.

《牛津词典》

数以十亿计的美元投入。

Billions and billions of dollars.

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此举将为信贷从业者提供数以十亿计的信用担保。

The move would prop up credit insurers, which guarantee billions of dollars in bond payments.

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Humans are collections of cells, all cells are the same in important ways, but cells acquire differences during development, and so we are collections of billions of cells.

人类是一个细胞的集合,细胞在关键方面都是一致的,但在发育中细胞获得了不同的特点,而我们是一个数以十亿计的细胞的集合

耶鲁公开课 - 生物医学工程探索课程节选

Those billions of cells come from successive rounds of cell division.

这数以十亿计的细胞,都来自一次次的细胞分裂

耶鲁公开课 - 生物医学工程探索课程节选