seals

音标发音

• 美式音标 [si:lz]

基本解释

• n.封條；印章
• n.海豹
• v.密封；蓋印；明確

词源解说

• 1230年左右進入英語，直接源自古法語的seel；最初源自通俗拉丁語的sigellum，意爲把設計圖案印在蠟上。

同根派生

• seals相关词

用法辨析

v. (動詞)

• seal用作名詞時的意思是“印章”,轉化爲動詞的意思是“蓋章於…上”,引申可表示“封”“封口”“封住”“最後確定”等。
• seal衹用作及物動詞,接名詞、代詞作賓語。
• seal作動詞指“密封”時，可以用seal the letter或seal the envelope表示“把信件密封”。

• seals使用方法
• seals详细辨析

英汉例句

用作名詞 (n.)

• They saw many seals off the Coast of Alaska.
  他們在阿拉斯加海岸外看見很多海豹。

用作動詞 (v.)

用作及物動詞: S+～+ n./pron.

• She sealed the letter.
  她把信封上了。

• seals更多例句

词组短语

用作名詞 (n.)

動詞+～

• affix 〔stamp〕 a seal 蓋章
• break 〔take off〕 a seal 啓封
• engrave a seal 刻圖章
• pass the seal 蓋有圖章
• put the seal on 在…封口処打上封印

• seals更多词组

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

• seals剑桥字典
• seals柯林斯字典

专业释义

機械工程

• 密封

  Therefore,the standard was to serve as a guide to manufacturing seals based on what was working in actual services.
  因此,對機械密封生産廠家有重要的指導作用。

  文學

• 館藏圖章

生物學

• 海豹[鰭腳目 (pinnipedia) 水生哺乳動物]
• 海豹科

材料科學

• 封印