Oscillations
n. 振动；振幅（oscillation的复数形式）
🗣️ 情景例句
Dean Rafer called me today.
Rafer主任今天打电话给我。
A journey of a thousand miles begains with a single step.
千里之行，始于足下。
Did you have a good journey?
你旅途愉快吗？