Billionth
num. 第十亿个, 十亿分之一
🗣️ 情景例句
Come on, poochie.
来吧，小家伙。
We know that you are leading exporters of coal and you can provide the quantity we need.
我们知道贵方是主要煤炭出口商，能满足我们的需求量。
I came here last month.
我上个月到这儿。