Vialog
路程仪[计]
🗣️ 情景例句
Don't worry about it.
别介意。
You said it. I didn't.
这是你说的喔！
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