94生活常识网有道词典

seals

S 开头单词专八核心词词源字典

音标发音

  • 美式音标 [si:lz]

基本解释

  • n.封条；印章
  • n.海豹
  • v.密封；盖印；明确

词源解说

  • 1230年左右进入英语，直接源自古法语的seel；最初源自通俗拉丁语的sigellum，意为把设计图案印在蜡上。

同根派生

     

用法辨析

    v. (动词)

  • seal用作名词时的意思是“印章”,转化为动词的意思是“盖章于…上”,引申可表示“封”“封口”“封住”“最后确定”等。
  • seal只用作及物动词,接名词、代词作宾语。
  • seal作动词指“密封”时，可以用seal the letter或seal the envelope表示“把信件密封”。

英汉例句

    用作名词 (n.)

  • They saw many seals off the Coast of Alaska.
    他们在阿拉斯加海岸外看见很多海豹。

    • 用作动词 (v.)

    用作及物动词: S+～+ n./pron.

  • She sealed the letter.
    她把信封上了。

词组短语

    用作名词 (n.)

    动词+～

  • affix 〔stamp〕 a seal 盖章
  • break 〔take off〕 a seal 启封
  • engrave a seal 刻图章
  • pass the seal 盖有图章
  • put the seal on 在…封口处打上封印

英英字典

    柯林斯英英字典

  • When you seal an envelope, you close it by folding part of it over and sticking it down, so that it cannot be opened without being torn.
  • If you seal a container or an opening, you cover it with something in order to prevent air, liquid, or other material from getting in or out. If you seal something in a container, you put it inside and then close the container tightly.
  • The seal on a container or opening is the part where it has been sealed.
  • A seal is a device or a piece of material, for example, in a machine, which closes an opening tightly so that air, liquid, or other substances cannot get in or out.
  • A seal is something such as a piece of sticky paper or wax that is fixed to a container or door and must be broken before the container or door can be opened.
  • A seal is a special mark or design, for example, on a document, representing someone or something. It may be used to show that something is genuine or officially approved.
  • If someone in authority seals an area, they stop people entering or passing through it, for example, by placing barriers in the way.
  • Seal off means the same as .
  • To seal something means to make it definite or confirm how it is going to be.
  • to affix a seal to, as proof of authenticity
  • A seal is a large animal with a rounded body and flat legs called flippers. Seals eat fish and live in and near the sea, usually in cold parts of the world.
  • to hunt for seals

专业释义

    机械工程

  • 密封

    Therefore,the standard was to serve as a guide to manufacturing seals based on what was working in actual services.
    因此,对机械密封生产厂家有重要的指导作用。

    文学

  • 馆藏图章

    • 生物学

  • 海豹[鳍脚目 (pinnipedia) 水生哺乳动物]
  • 海豹科

    • 材料科学

  • 封印