Polygalacturonic acid
[化] 聚半乳糖醛酸
🧩 词语组成解析
🗣️ 情景例句
But first things first.
但事有先后。
My brother took a trip to Mexico.
我的兄弟到墨西哥旅行了。
'I can't hear a word!' I said angrily.
“我一个字也听不见了！”