Monendomorphism
单一自同态
🗣️ 情景例句
If you'd like to hear some new English songs, I suggest you download them from the web.
如果你想听一些新的英文歌，我建议你上网下载。
He keeps on studying ecology.
他不断攻读生态学。
One of the first things Annie did was to teach me how to play.
安妮首先要做的事情之一，就是教我如何耍。