Calcimangite
锰方解石
🗣️ 情景例句
Philip had to go back to the hospital. Philip
必须要回医院。
As you all know, doing business is not an easy thing to do.
大家都知道，做生意并不是一件容易的事。
We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.
我们要十分感谢那些吃昆虫的鸟和兽，然而把它们所杀死的昆虫全部加在一起也只相当于蜘蛛所消灭的一小部分。