Dipicolinic acid
[化] 吡啶二羧酸
🧩 词语组成解析
🗣️ 情景例句
I just want to confirm that the arrangements have been made.
我要确认所有计划都安排好了。
He speaks English fluently.
他讲英语很流利。
After three hours, the men stopped for a meal break.
3小时之后，工人们停下来吃饭。