| 单词 | 使用期 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔biodegrade〕Some plastics are designed to biodegrade when their useful life is over.有些塑料被设计为过了有效使用期就可以生物降解。剑桥高阶〔expiration date〕The date past which a product, such as food or medicine, must be sold or removed from availability because it is no longer expected to be fresh or effective.过期产品：超过产品（如食品或药品）的销售期或使用期，产品变得不新鲜或失效美国传统〔kick against〕North Sea operators kicked against legislation making them responsible for removing oil platforms at the end of their useful life.北海的石油开采商激烈反对要求他们在石油钻井平台使用期结束之后将其移除的立法。柯林斯高阶〔lifespan〕A pair of tights has the lifespan of a mayfly.紧身裤袜的使用期极短。英汉大词典〔lifespan〕Most boilers have a lifespan of 15 to 20 years.大多数家用热水器的使用期限为十五至二十年。外研社新世纪〔lifespan〕Most boilers have a lifespan of 15 to 20 years.绝大多数锅炉有15至20年的使用期限。柯林斯高阶〔long-lived〕A successful textbook is long-lived and stays in print for several years.成功的教科书使用期长,还可重版好几年。英汉大词典〔occupancy〕The day for changing from one occupancy to the next was on a Saturday.使用期的变更日在星期六。朗文当代〔originally〕The plane has been kept in service far longer than originally intended.这架飞机的使用期已经远远超设计年限。外研社新世纪They have bought the house with a 999-year lease which gives them security of tenure.它们买了一所房屋，契约讲明使用期为999年从而保证了他们的使用权。剑桥国际 |
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