n. （思想、信息等的）交换( interchange的名词复数 ); （进出高速公路的）互通式立交; 立体交叉道

v. （指两人等）交换事物, 互换( interchange的第三人称单数 ); 使两人或两物相互易位; （使某事物）交替变化

n a junction of highways on different levels that permits traffic to move from one to another without crossing traffic streams

n mutual interaction; the activity of reciprocating or exchanging (especially information)

n the act of changing one thing for another thing

n reciprocal transfer of equivalent sums of money (especially the currencies of different countries)

v put in the place of another; switch seemingly equivalent items

v give to, and receive from, one another

v cause to change places

v reverse (a direction, attitude, or course of action)