Obtusilic acid
[化] 4-癸烯酸
🧩 词语组成解析
🗣️ 情景例句
Nothing much.
没什么。
Well, I think it's time we get back to business.
哦，我认为我们该回到正题上了。
Though in those days, traveling was not as easy as it is today,
尽管在当时旅行不像现在这么容易，