Razoxane
[化] 雷佐生; 丙亚胺; 哌嗪二酮丙烷
🗣️ 情景例句
You had better study hard.
你最好努力学习。
After forty years teaching English he thinks it's time to call it a day.
他教英语四十年，认为该退休了。
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？