indispensable

indispensable
adjective
  1. absolutely necessary
    不可或缺的,必需的
    he made himself indispensable to the parish priest.
    他成了对教区教士来说不可或缺的人物。
派生
indispensability
noun
indispensableness
noun
indispensably
adverb
语源
  1. mid 16th cent. (in the sense 'not to be allowed or provided for by ecclesiastical dispensation'): from medieval Latin indispensabilis, from in- 'not' + dispensabilis (see dispensable)
英语宝典
考试词汇表