Oxiniacic acid
[化] 氧烟酸
🧩 词语组成解析
🗣️ 情景例句
You've got lots of time to improve your English.
你已经花了好多时间去提高你的英语水平。
When he plays football, he wears a uniform.
他踢足球的时候，也会穿着制服。
but unfortunately not all of us are born handymen.
但不幸的是，我们并非人人都是能工巧匠。