necessary名词短语：
reasonably necessary 合理需要，合理必要，必要性，合理地有需要;
necessary operation 必要动作，必要的动作;
necessary名词例句及翻译：
1.Money is not required to buy one necessary of the soul.
灵魂所需的必需品，金钱连一件也买不着。
2. So problems linked to absence of latrines, absence of anything necessary.
所以，现在面临的问题是没有厕所，没有任何必需品。
3. Greece must have help to import the goods necessary to restore internal order and security so essential for economic and political recovery.
只有在别国的帮助下得到这些必需品，希腊才能重整社会秩序和安全，才能复苏经济，恢复政治。
4. With often disastrous consequences, some writers have considered the bottle as necessary as the pen.
有些作家将酒看作是同笔一样的必需品，后果往往不堪设想。
5. For her, books were as necessary to life as bread.
对她来说，书就像面包一样，是生活必需品。
necessary的形容词翻译及例句：
necessary做形容词时表示必要的、必须的、无法避免的。
1. If you are agreeable, my husband's office will make all the necessary arrangements.
如果你同意，我丈夫的事务所将作出所有必要的安排。
2. We are willing to authorize the president to use force if necessary.
我们愿意授权总统在必要的时候使用武力。
3. This drives up the cost of care without any necessary actual improvement in outcomes.
开这车可以提高医疗的费用，但是对于治疗结果却没有什么必然的实质性改进。
4. In this case, it is necessary that the precursor fields are formed by every earthquake to superpose mutually.
在这种情况下，各次地震的前兆场之间的相互叠加是不可避免的。
