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"