Polycycline
(=tetracycline)四环素
🔁 扩展释义
【化】 四环素
🗣️ 情景例句
Where do you like to live, in the city or in the country?
你喜欢住在城市还是乡村？
Time past cannot be called back again.
光阴一去不复返。
I'm all set.
我都准备好了。