Dilval
镍铁合金
🗣️ 情景例句
I am planning to write an editorial that I think will help you.
我计划写一篇社论， 我认为应该能帮助你们。
Excuse me I can't visit you.
对不起我不能拜访你。
If we could actually see the path described by a particle,such as a sand grain in the rock,
假如我们真能看到的运动轨迹，诸如岩石中一个沙粒分子