Portlandite
n. [矿]氢氧钙石
🗣️ 情景例句
We enjoyed our trip to Europe.
这次到欧洲旅行，我们非常愉快。
You're bound to feel that way at first, I guess.
我想，一开始都会有这样的感觉。
He devoted his life to the study of science.
他把毕生献给科学研究。