cross-fertilizationWiktionary 原文英美构词拆解cross-前缀+fertilization词干cross-Shaped like a cross or X; crossing lines. · Perpendicular in angle; transverse.词源说明From cross- + fertilization.释义名词noun1Fertilization by the union of gametes of different plants (sometimes of different species).2by extensionThe mutual exchange of ideas or concepts from different fields for mutual benefit.