Retinoids
[医]类视黄醇
🗣️ 情景例句
I have been a poor student of foreign languages.
外语就学得不好。
You must reap what you have sown.
种瓜得瓜，种豆得豆。
It is impossible to look for life on another planet using earth-based telescopes.
使用放置在地球上的望远镜是无法观察到其他行星的生命的。