Calcsinter
[化]钙华, 石灰华, 多孔石灰岩
🗣️ 情景例句
I owe you an apology for what I did last night.
我应该为昨天晚上的事向你道歉。
We have 50 provinces.
我们有50个省。
Bob tries another pop star. This time he has more difficulty in getting through.
鲍勃试着想请另一个流行歌星。但这次电话比较难打通。