Retrosynthesis
[化] 逆合成
🗣️ 情景例句
Hey, I wanted you to hear my new sound system
嘿，我正想让你听听我的新音响。
You're very kind to take the trouble to help me.
谢谢你不怕麻烦帮助我。
The next evening the man upstairs came home from work late as usual.
第二天晚上，楼上人和平时一样很晚才下班回家。