Billionth
num. 第十亿个, 十亿分之一
🗣️ 情景例句
Where'd you spend your vacation?
你在哪儿度的假？
I asked him to paint it for me, but he wouldn't
我请他帮我油漆，但是他不肯。
During the day, sleep comes in snatches.
白天是忽睡忽醒，