Nitrocalcite
钙硝石
🗣️ 情景例句
There are several tours of the Grand Canyon.
到大峡谷有好几个旅游团。
I told him that if he tried to remove the fence it would be over my dead body.
我告诉他，除非我死了不然他从从休想拆掉这道篱笆。
Yes, we might have to do that.
是呀，恐怕只有这么做了。