[] () the state of becoming old-fashioned and no longer useful 过时；陈旧；淘汰◆Mobile phones are an example not of planned obsolescence (= designed not to last very long) but instant obsolescence. 手机不属於计划报废产品（设计成不耐用）而是瞬间报废产品的例子。◆products with built-in obsolescence (= designed not to last long so that people will have to buy new ones) 内置性报废产品（故意设计成不耐用而迫使人们购买新的产品）▸ˌobsoˈlescent