Calcsinter
[化]钙华, 石灰华, 多孔石灰岩
🗣️ 情景例句
I think I know you. Aren't you...?
我觉得我认识你。你是……吗？
He hasn't done any worthwhile work in five years.
这五年来他没做过一件正经事。
You did a good job.
你干的非常好。