Doppler's phenomenon
[医] 多普勒氏现象(物理)
🧩 词语组成解析
🗣️ 情景例句
That's a great idea.
这是一个绝妙的主意。
There was a big crowd and we had difficulty getting a taxi.
外面有一大群人并我们有很困难招一辆出租车。
We need to cooperate perfectly to win the game.
要想赢得比赛，我们需要密切配合。