Collophanite
(=collophane)胶磷矿
🗣️ 情景例句
Hi. Michelle,
嗨， Michelle，
It's essential.
这是必要的。
This immense chasm has been formed by an underground stream which has tunneled a course through a flaw in the rocks.
这个深邃的洞穴是由一条地下暗泉冲刷岩石中的缝隙并使之慢慢变大而形成的。