Sedanoic acid
[化] 瑟丹酸
🧩 词语组成解析
🗣️ 情景例句
My friend, I am in a big mess, do you think you could help me tomorrow?
朋友，我现在正忙得一塌湖涂。明天你可以帮一下我吗？
I'm glad to hear about your promotion.
我很高兴听到你升迁的消息。
That's good to know.
幸好知道了这件事。