Oxyindole
羟基吲哚
🗣️ 情景例句
You must be very tired after the journey.
旅行之后，您一定累了吧！
How long will you remain in the country?
你将会在乡间逗留多久？
What will be the population of these countries by the end of the twentieth century?
到20世界末较发达国家的人口将是多少？