Rectorite
钠板石
🗣️ 情景例句
And if I can be of any help,
如果我能有所帮忙的话，
Archeologists still can only surmise as to the origin of Man.
考古学家们对于人类的起源依然无法推测。
Can I have a look at it?
我可以看一下吗？