n.  十亿

n.  数以十亿计，大量

• billionaire  n. 亿万富翁

• billions of sth  很多，大量

• PepsiCo is to spend billions of dollars to develop drinks and snacks and reformulate existing ones with lower sugar, salt and fat, as consumers demand healthier options and regulatory pressure intensifies amid an obesity epidemic (流行病). 花巨资

• A billion stars shone in the night sky.

  夜空中繁星闪烁。 

• There are billions of things I want to say.

  我有很多很多的话要说。