essential
英 [ɪ'senʃ(ə)l]美[ɪ'sɛnʃl]
- adj. 基本的;必要的;本质的;精华的
- n. 本质;要素;要点;必需品
英英释意
- 1. anything indispensable;
- "food and shelter are necessities of life"
- "the essentials of the good life"
- "allow farmers to buy their requirements under favorable conditions"
- "a place where the requisites of water fuel and fodder can be obtained"