Phthanite
燧石, 角石, 英石岩
🗣️ 情景例句
I'm always prepared to listen.
我总是准备听的。
Keep up the good work.
再接再厉。
a ticklish business which is achieved with the aid of two tame elephants roped to the captive on either side.
这是一件棘手的事，需要在它两侧拴上两头驯服的大象才能完成。