Validacin
有效霉素
🗣️ 情景例句
Is this OK?
这样可以吗？
We never know the worth (or value) of water till the well is dry.
井枯方知水可贵。
We stay at home on Sundays. We play games on Tuesdays and Thursdays.
周日我们呆在家里。周二、周四玩游戏。