Monendomorphism
单一自同态
🗣️ 情景例句
I could sure use a drink.
我真得来一杯。
Can I cancel this ticket?
我可以取消这张票吗？
The cave might never have been discovered has not the entrance been spotted by the distinguished French pot-holer, Berger.
若不是法国著名洞穴探险家伯杰由于偶然的机会发现了这个洞口的话，这个洞也许不会为人所知。