Karlsteinite
高钾碱性花岗岩
🗣️ 情景例句
He'll be fine, Marilyn.
他不会有事的 ，Marilyn。
How long have you been studying English?
你学英语多久了？
A new machine called 'The Revealer' has been invented and it has been used to detect gold which has been buried in the ground.
一种叫“探宝器”的新机器已经发明出来，并被人们用来探测地下埋藏的金子。