Eosite
钒钼铅矿
🗣️ 情景例句
I've got to keep my nose to the grindstone to support my family.
我拼命工作养家。
A scientist has come up with a good idea. That's it!
科学家想起了一个好创意。就是这个！
But as the paper moved from side to side under the pen point,
由于纸在笔尖下来回运动，