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  1. essential

    • IPA[ɪˈsɛnʃ(ə)l]

    英式

    • adj.
      absolutely necessary; extremely important;fundamental or central to the nature of something or someone
    • n.
      a thing that is absolutely necessary;the fundamental elements or characteristics of something
    • 釋義
    • 相關詞
    • adj.
      形容詞
    • 1. absolutely necessary; extremely important:

      it is essential to keep up-to-date records

      fibre is an essential ingredient of our diet

    • 2. fundamental or central to the nature of something or someone:

      the essential weakness of the plaintiff's case

    • 3. (of an amino acid or fatty acid) required for normal growth but not synthesized in the body and therefore necessary in the diet.
    • 4. (of a disease) with no known external stimulus or cause; idiopathic:

      essential hypertension

    • n.
      名詞
    • 1. a thing that is absolutely necessary:

      we only had the bare essentials in the way of equipment

    • 2. the fundamental elements or characteristics of something:

      he was quick to grasp the essentials of an opponent's argument

    • adj.
      not absolutely necessary (tending to be less forceful in meaning than inessential):
    • during the strike non-essential hospital services were halted
    • n.
      a non-essential thing:
    • we have little or no time to spare for non-essentials

    Powered by Oxford Dictionary of English 3e

    • n. A volatile oil, usually having the characteristic odor or flavor of the plant from which it is obtained, used to make perfumes and flavorings.

    • n. a natural oil typically obtained by distillation and having the characteristic odour of the plant or other source from which it is extracted.

    Powered by Oxford Dictionary of English 3e

    • n. a natural oil typically obtained by distillation and having the characteristic fragrance of the plant or other source from which it is extracted.

    Powered by New Oxford American Dictionary

    • n. a fatty acid that cannot be synthesized by the body (or not in adequate amounts) and is therefore essential to the diet. In humans, alpha linoleic acid and linolenic acid are the primary essential fatty acids:

    • nuts are rich in protein, fiber, and essential fatty acids

    Powered by New Oxford American Dictionary

    • n. a fatty acid that cannot be synthesized by the body (or not in adequate amounts) and is therefore essential to the diet. In humans, alpha linoleic acid and linolenic acid are the primary essential fatty acids:

    • nuts are rich in protein, fibre, and essential fatty acids

    Powered by Oxford Dictionary of English 3e

    • 更多解釋
    • IPA[əˈsen(t)SHəl]

    美式

    • adj.
      absolutely necessary; extremely important:
    • it is essential to keep up-to-date records

      fiber is an essential ingredient

    • n.
      a thing that is absolutely necessary:
    • we had only the bare essentials in the way of gear

    Powered by New Oxford American Dictionary

  2. 知識+

    • primary和essential的中文?

      ...primary Hypertension),又稱為本態性高血壓(Essential Hypertension),是指某些原因及發病機轉無法...基本的;【醫】特發的, 自發的 ←(醫學用法)補充: essential differences 本質的區別 essential English...

    • 生物學植物學英翻中解釋名詞翻譯~急

      ..._Phys_Bio332/Bio332_05_LN5web.pdf major essential elements中文? 主要的必要元素 major elements中文? 主要元素 essential...

    • 什麼是”Essential Editions”?

      Essential edition 有精華版,簡化版的意思。 Tra edition 就沒看過了,是 Ex-Tra edition? Tra dition?