Molecular movement
[医] 分子运动, 布朗氏运动
🧩 词语组成解析
🗣️ 情景例句
Is he a client?
他是顾客吗？
I ought to write a letter.
我应该写一封信。
Eric had been the eldest son of the family, very much older than his two brothers.
埃里克是这家长子。