Polcarb
碳酸钙盐
🗣️ 情景例句
Next weekend ...
下周末……
To have a discussion with the committee
在委员会讨论
The daily exercises lasted only eleven minutes and I proposed to do them early in the morning before anyone had got up.
早锻炼一共只有11分钟，我打算在别人起床之前进行。