| 释义 |
DEFINITIVE EXAMPLES 权威例句〔fundamental〕Something that is an essential or necessary part of a system or object.基础：系统或事物极其重要或必不可缺的部分美国传统〔obligate〕The obligate content of the information pack should be as little as possible.资料袋里必不可缺的内容应该尽可能地少。外研社新世纪〔vitamin〕Apples contain several essential vitamins.苹果含有好几种人体必不可缺的维生素。麦克米伦高阶 |