Something that is obsolete is no longer needed because something better has been invented.
例句
So much equipment becomes obsolete almost as soon as it's made.这么多设备几乎一生产出来就要被淘汰。
英汉词典释义
adj.
已不用的;已废弃的;过时的
an obsolete design过时的设计Electronic banking may make overthe- counter transactions obsolete.电子银行服务也许会淘汰柜台交易。These goods are obsolete and will not fetch much on the market.这些货品过时了, 在市场上卖不了高价。