[mass noun]the process or state of converging 汇集;相交 the convergence of lines in the distance. 线条在远处的相交。 ■(Biology)the tendency of unrelated animals and plants to evolve superficially similar characteristics under similar environmental conditions (生)趋同进化 ■(亦作 convergence zone)a location where airflows or ocean currents meet, characteristically marked by upwelling (of air) or downwelling (of water) 会聚区