Pectinic acid
[化] 果胶酯酸
🧩 词语组成解析
🗣️ 情景例句
It's his first venture into business.
他初涉商界。
Your niece is engaged,isn't she?
你的侄女订婚了，是吗？
It looks like we have problem with the shipment.
货有问题哦。