Pannic acid
[化] 绵马酸
🧩 词语组成解析
🗣️ 情景例句
Can you give me a hand with my homework?
你能帮忙教我做家庭作业吗？
We can't recall how often he's written.
我们记不起来他每隔多久写一封信。
No, I need to talk to the home office.
不，我得先跟总公司谈谈。