Oxindol
羟吲哚
🗣️ 情景例句
She's on a diet these days.
这些天她在节食。
Every heart has its own sorrow.
人人都有伤心处。
He's been there for over two years. He's been there since two years ago.
他到校有两年多时间了。他两年前就到那儿学习了。