Chalcomorphite
硅铝钙石
🗣️ 情景例句
get some background on the job.
了解这项工程的一些背景。
If there were no clouds, we should not enjoy the sun.
吃得苦中苦，方知甜中甜。
But they suddenly became the parents of quintuplets,
但是他们出人意料生了个五胞胎，