◆a new one<非正式,幽默>一件新鲜事
Your python ate your homework? That's a new one!巨蟒吃了你的作业？这倒是件新鲜事！
a new one on sb对某人而言的新鲜事；某人第一次听说的事情
I asked Dr Smith if he'd heard of 'retrolexia' but he says it's a new one on him as well.我问史密斯医生是否听过retrolexia这个词, 他说他也是第一次听说。
Ever come across the name Marcus Grimethorpe?–No, sorry, that's a new one on me.你听到过马卡斯•格莱姆索普这个名字吗？——没有, 对不起, 我没听说过。