Idiotoxin
变(态反)应原
🗣️ 情景例句
What do you do in your spare time?
你在业余时间如何消遣？
Skiing is such a challenging sport!
滑雪是非常有挑战性的运动！
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