Mansfieldite
砷铝石
🗣️ 情景例句
He is as poor as a church mouse.
他一贫如洗。
Let's go visit them.
让我们去拜访他们吧。
It was from the study of these that so much was learnt about the interior of the earth.
正是从这两种波的研究中，我们可以了解到地球内部的许多情况。