Thrapic acid
[化] 十七碳四烯酸
🧩 词语组成解析
🗣️ 情景例句
Why is that necessary?
为什么有此必要
Friends must part.
天下无不散之筵席。
I joined in the march and we were marching peacefully along and then the police came up.
我参加了游行，我们以和平的方式往前行进，这时警察突然来了。