outdated
adjective uk/ˌaʊtˈdeɪ.tɪd/ us/ˌaʊtˈdeɪ.t̬ɪd/
过时的，陈旧的
old-fashioned and therefore not as good or as fashionable as something modern
outdated weapons/ideas 过时的武器／观点
Nowadays this technique is completely outdated. 现在这种技术已经相当过时了。
Synonyms: out of date (FASHION)superannuated