Billionth
num. 第十亿个, 十亿分之一
🗣️ 情景例句
Where did you go to school?
你在哪儿上学？
What brings you here?
什么风把你吹来啦？
We would lay less stress on 'facts and figures'and more on a good memory,
人们不会再重视"资料和数据"，而靠好记性、