Dinicotinic acid
[化] 烟碱二酸; 吡啶二甲酸
🧩 词语组成解析
🗣️ 情景例句
2. We should all start exercising.
咱们都该去健身了。
If his plan works, he'll earn 100 million in 10 years.
如果按照他的计划做，十年就能挣到一亿元了。
'Why are you doing that?' Sally asked.
“你为什么要那样做呢？”萨莉问。