Picolinic acid
[建] 啶甲酸-[2]
🧩 词语组成解析
🗣️ 情景例句
They are constantly quarreling.
他们时常吵架。
The newsboy throws his papers in the wrong place.
报童把报纸投错了地方。
What kind of price did you have in mind?
你说多少呢？