Dinicotinic acid
[化] 烟碱二酸; 吡啶二甲酸
🧩 词语组成解析
🗣️ 情景例句
I heard through the grapevine that the minister is going to resign.
我听到小道消息，首相将辞职。
If there's anything else I can do, please call on me.
如果有任何事情我能效劳的话，请打电话给我。
It'll be the biggest live concert the world has ever seen.
这将是世界上从未有过的最大的现场音乐会。