obsolescence
noun [ U ] uk/ˌɒb.səˈles.əns/ us/ˌɑːb.səˈles.əns/
荒废; 退化
the quality of being obsolete
Mobile phone technology is developing so quickly that many customers are concerned about obsolescence. 手机技术发展得如此迅速，以至于许多顾客担心淘汰的问题。
built-in/planned obsolescence （产品）内在的／有计划的淘汰（故意将产品设计得不耐用）
the fact that a product is intentionally designed and made so that it will not last for a long time
Sadly, built-in obsolescence was the engine that drove the economy.
Our garments are made to last and can be repaired so there's no built-in obsolescence.
Products like these have built-in obsolescence so you have to replace them every two or three years.
Planned obsolescence might have been good for the economy but it was nothing short of disastrous for the planet.
Put simply, we have to abandon planned obsolescence and instead build a reputation as a brand whose products last.