Definition (等级)
To be exceptionally superior or unmatched in a particular field or activity.
列居顶尖；无人能及
As a long-distance runner, she is in a class of her own.
作为一名长跑运动员，她出类拔萃。
Among manufacturing executives, Morris is in a class of his own.
在制造业高管中，莫里斯无人能及。
When it comes to gratuitous insults, the taxi drivers in this city are in a class of their own.
说到无端侮辱，这座城市的出租车司机真是独一无二。