Ketoindole
羟吲哚
🗣️ 情景例句
You look nice in your new shirt.
你穿这件新衬衫挺好看的。
It's a worthwhile cause.
这是值得为之奋斗的事业。
I'm sorry, I can't find it. I thought it was in my coat.
对不起，我的票找不到了。我原来以为是放在大衣里。