交换分类

交的英语翻译：

associate with; bargain; deal; deliver; fall; friend; hand over; join; meet
mutual; relationship
【医】 venery

换的英语翻译：

barter; exchange; trade

分类的英语翻译：

sort; class; classify; assort; divide; label; staple; system
【计】 categories; categorization; category
【化】 classification
【医】 classifieation; grouping; systematization; systematize; typing
【经】 classification; classifying; group; sort