Chromone
色酮, 苯并-γ-吡喃酮
🗣️ 情景例句
You have been working on this for some time, Richard.
你从事这工作已有一段时间了， Richard。
I bet you can.
我确信你能做到。
At the end of this period we put the play on in a theatre.
最后我们就在剧场上演这出戏。