Phase velocity
[化] 相速
🧩 词语组成解析
🗣️ 情景例句
There's no room for any excuse for what you have done.
你的所作所为没有辩解的余地。
When flatterers meet, the devil goes to dinner.
马屁精会面，魔鬼去赴宴。
Oh, a lot of different things! One machine helps them to put rice in bags.
能做好多不同的事情呢！比如能帮助农民把大米装袋等。