Utd
abbr. united 联合的, 统一的
🗣️ 情景例句
So long.
再见。
I'll drown my sorrows.
我要消愁解闷。
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