复数： billions

Of course feeding ten billion will not be trivial .

当然，喂养十亿人不是一件微不足道的小事。

Correspondent there are 350000 billion particles in this tube .

记者在这个试管里，共有350万亿个粒子。

The show begins in just a billion years or two .

这场好戏在1、2十亿年之后便会上演哟。

Firms can produce perhaps a billion doses of seasonal vaccine every year .

生产商每年或许能够生产数以十亿的季节性流感疫苗。

More than a billion cars now roll on the world 's roads .

现在驰骋在全球公路上的汽车已突破了十亿辆。