Nitrocalcite
钙硝石
🗣️ 情景例句
Marilyn, I have to tell you something.
我得告诉你， Marilyn
You should wear a sweater, It's cold today.
你应该穿一件毛衣，因为今天很冷。
No, we can ship in lots of any size.
没有，任何数量都可以出货。