Premeostrua
[医] 经前期
🗣️ 情景例句
If we're all prepared to recycle paper, thousands of trees could be saved every day.
如果纸能被循环利用，那么每天千千万万的树木就可得以挽救。
It's hot this afternoon.
今天下午很热。
'Oh dear,' said the conductor suddenly.
“哎呀，”售票员突然说，