Polygalacturonic acid
[化] 聚半乳糖醛酸
🧩 词语组成解析
🗣️ 情景例句
I have to meet my wife.
我得去接我太太。
To answer the first part of your question, I'd like to say that our studies were very extensive.
你问题的第一部分，我要说的就是我们的研究非常广泛。
an ancient, exquisite, powerful message.
一个源远流长、高雅而有力的信息。