Picolinic acid
[建] 啶甲酸-[2]
🧩 词语组成解析
🗣️ 情景例句
Boswell's a powerful speaker.
Boswell是个有辩才的演说家。
Will you accept the charge.
你愿意付电话费用吗？
I'll have to check with my boss.
我得和老板先谈谈。