单词盒子

strains

S 开头单词

基本解释

  • n. [微] 菌株（strain複數）；種族
  • v. [力] 拉緊；使過度勞累（strain的第三人稱單數形式）

词源解说

  • 1400年左右進入英語，直接源自古法語的estreindre，意爲拉緊，擠壓；最初源自古典拉丁語的stringere，意爲拉緊，綁緊。

同根派生

     

用法辨析

    v. (動詞)

  • strain的基本意思是“拉緊”,強調過度使用、過於操勞、過於用力致使身躰的某部分肌肉、器官損傷,可特指肌肉或靭帶拉傷。引申指“竭盡全力…,努力…”。
  • strain既可用作及物動詞,也可用作不及物動詞。用作及物動詞時,可接名詞或代詞作賓語。
  • strain接介詞at表示“拉緊”; 接for或after表示“使勁”。
  • strain與stress的區別：過度緊張（strain）是由stress（壓力）産生的結果，而壓力stress是相鄰的物躰或部分之間的相互作用，由此可導致物躰形態或尺寸的改變；
  • strain同sprain的比較：sprain（扭傷）是指腳踝或手腕瞬間扭傷的結果，而strain是肌肉用力過強或過久所導致的結果。

英汉例句

    用作動詞 (v.)

    用作不及物動詞: S+～(+A)

  • The sporters strained and struggled.
    運動員奮力扭動摔打。

    • 用作及物動詞: S+～+ n./pron.

  • They strained the wire between two posts.
    他們拉緊了兩根電線杆之間的電線。

    • 其他

  • The mistake has caused strained relations between the manager and his staff.
    這個錯誤造成了經理同雇員之間的緊張關系。

词组短语

    用作動詞 (v.)

    ～+名詞

  • strain one 's ears 竪起耳朵聽
  • strain every nerve 竭盡全力
  • strain excessively 過分地拉緊
  • strain feebly 無力地拉緊
  • strain furiously 瘋狂拉緊

英英字典

    柯林斯英英字典

  • If strain is put on an organization or system, it has to do more than it is able to do.
  • To strain something means to make it do more than it is able to do.
  • Strain is a state of worry and tension caused by a difficult situation.
  • If you say that a situation is a strain, you mean that it makes you worried and tense.
  • Strain is a force that pushes, pulls, or stretches something in a way that may damage it.
  • Strain is an injury to a muscle in your body, caused by using the muscle too much or twisting it.
  • If you strain a muscle, you injure it by using it too much or twisting it.
  • If you strain to do something, you make a great effort to do it when it is difficult to do.
  • When you strain food, you separate the liquid part of it from the solid parts.
  • A strain of a germ, plant, or other organism is a particular type of it.

专业释义

    辳業科學

  • 品系

    Strain 90-36 has higher defensive ability to light inhibition damage than other three strains.
    品系90-36具有相對較強的防禦光抑制破壞的能力。

  • 菌種

    Objective The aim was to determine the optimum compound proportion of strains.
    目的確定最佳菌種複配比例。

  • 株系

    So, we think they are different strains which belong to the same type.
    所以，它們應屬於同一類病毒的不同的病毒株系。

    機械工程

  • 菌群

    There are four main strains including Bacillus licheniformis, Virgibacillus carmonensis, Bacillus sp. TAT112, Bacillus galactosidilyticus in later period.
    從中期到後期優勢條帶相似性較大,菌群群落結搆比較穩定,主要優勢菌爲：Bacillus licheniformis, Virgibacillus carmonensis, Bacillus sp.TAT112, Bacillus galactosidilyticus。