Calcispongea
钙海绵钢
🗣️ 情景例句
There are, Ellen.
一定有， Ellen。
If he doesn't help him, I will.
如果他不，我将帮助他。
The bridge is so long that the shape of the earth had to be taken into account by its designer.
由于桥身太长，设计者不得不考虑了地表的形状。