Fifteenthly
adv. 第15;1/15地
🗣️ 情景例句
When was your last day off?
上次休假是在什么时候？
I get into bed at about 11:30 and go right off to sleep.
我大约在11:30上床并且睡觉。
They work all day.
他们整天营业。