necessary基本解释
adj,[数]必要的；必需的；必然的,同近
necessary相关例句和用法The booklet provides all the necessary information about the college..这本小册子提供了关于那所学院的所有必需信息。
necessary英英释义必要的；必需的；必然的英释adjadjsomething that is necessary is what you need to have or need to do
necessary短语if necessary,如果必要的话.短语
