Pectinic acid
[化] 果胶酯酸
🧩 词语组成解析
🗣️ 情景例句
You don't have a leg to stand on.
你的观点不值一驳。
First, I would like to express to all of you here our sincere welcome.
首先，我向在坐的诸位表示诚挚的欢迎。
Many of them have to wait six months for their goods.
许多顾客不得不等上半年才得到所需的商品。