obsolete
adjective uk/ˌɒb.səlˈiːt/ us/ˌɑːb.səlˈiːt/
C1 废弃的;过时的;淘汰的;老化的
not in use any more, having been replaced by something newer and better or more fashionable
Gas lamps became obsolete when electric lighting was invented. 电灯发明以后煤气灯就被淘汰了。