Revertive
可逆的
🗣️ 情景例句
Alexandra might call. Alexandra
可能会来电话。
She fears Tom will drop out of school.
她担心汤姆会休学。
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