Pectinic acid
[化] 果胶酯酸
🧩 词语组成解析
🗣️ 情景例句
I've only been waiting for an hour.
我已经等了一个小时了。
Want of care does us more damage than want of knowledge.
粗心比无知更为有害。
Class 3 were the winners!
3班获胜了！