Macdougal's theory
[医] 麦克杜加耳氏学说(生物学)
🧩 词语组成解析
🗣️ 情景例句
He lost his money due to his own carelessness.
由于大意，他丢了钱。
We went to a concert last night to hear the symphony orchestra.
我们昨晚去了一个音乐会听交响乐乐队演奏。
There are some boats on the river.
河上有几艘船。