Ascertaining
vt. 确定；查明；探知
🗣️ 情景例句
Thank you.
谢谢。
You are thinner than I am.
你比我廋。
An ocean wave passing through deep water causes a particle on the surface to move in a roughly circular orbit,
穿过深水的海浪使水面上的一个微粒按照一种近乎圆形的轨道移动，