Ciliatine
氨乙基膦酸
🗣️ 情景例句
Remember catching your first fish?
还记得你第一次钓到鱼的情形吗？
What do you want to be after school?
当你完成学业以后，你要做什么？
I have just received a letter from my brother, Tim.
我刚刚收到弟弟蒂姆的来信，