Ethavan
乙基香草醛
🗣️ 情景例句
I can't make sense of it.
这个我弄不明白。
Business may be troublesome, but idleness is pernicious.
事业虽扰烦，懒惰更害人。
The problem now facing humanity is: What is going to be done with all this knowledge?
用这些知识去做什么？