Semialdehyde
半醛
🗣️ 情景例句
He appeared ill at ease at the party.
他在宴会上显得很拘谨。
Can I speak to Mr. Li?
我能请李先生讲话吗？
My old friend, Frank Halliday, is just such a person.
我的老朋友弗兰克。哈利戴正是这样一个人。