Phase velocity
[化] 相速
🧩 词语组成解析
🗣️ 情景例句
Young drivers are more likely to be involved in an accident.
年轻驾驶员更容易出事。
I'm feeling under the weather.
我觉得不舒服。
He suggested that a double railway-tunnel should be built.
他提议建一条双轨隧道，这样就解决了通风问题。