Newkirkite
水锰矿
🗣️ 情景例句
If he says he's going to be here, he's here.
假如他说他要来这儿 他就一定会来。
It's nothing serious; just some routine examination (checkups).
这并不是什么了不起的事，只不过是常规检查而已。
Yes. If we go on polluting the world, it won't be fit for us to live in.
是的。如果我们继续污染世界，地球就不适合我们居住了。