Polyacid
a. 多酸的
🗣️ 情景例句
I sure do.
我当然记得。
We would appreciate it if you let us know whether you allow cash or trade discounts.
若能告知你方是否给现金折扣或商业折扣，将不胜感激。
Two ice cream please.
请拿两份冰淇淋。