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TOEFL IELTS BNC: 4259 COCA: 4021
seal
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verb [T] /siːl/
present tense
I/you/we/theyseal
he/she/itseals
present participlesealing
past tensesealed
past participlesealed

  1. seal

    or

    seal up

    to close a container or space by covering it with something so that air or other substances cannot get in or out 封；密封
    seal something with something :

    Seal the box with tape. 用胶带封住盒子。

    Small gaps can be sealed with wax. 小裂缝可以用蜡封住。

     Synonyms and related words
    To close or lock something: close off, close up, lock out...

phrasal verbs

See also
seal
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noun [C] /siːl/
singularseal
pluralseals
  1. 1
    a large sea animal that eats fish and lives mainly in cold parts of the world. Seals are amphibious (=they can live both in water and on land). A young seal is called a pup. 海豹（一种大型海洋动物，以鱼为食，居于寒带，属两栖动物）
     Synonyms and related words
    Sea animals: conger eel, coral, cuttlefish...
  2. 2
    a piece of something such as wire or wax that seals a container and that you have to break before you can open the container （开启容器前需拆开的）封条，封蜡，火漆
     Synonyms and related words
    Lids and other parts of containers: bung, cap, compartment...
    1. a.
      a shaped piece of something such as rubber that closes a hole inside a machine so that air or other substances cannot get in or out 密封垫

      I replaced the seal, but oil is still leaking out. 我换了密封垫，但油还是外漏。

       Synonyms and related words
      Parts of machines and machinery: ancillary, ball bearing, bearing...
  3. 3
    a special mark that you put on something, for example a document, to show that it is legal or official 印记；印章；图章
     Synonyms and related words
    Vouchers, coupons, labels and receipts: bar code, coupon, courtesy card...
See also
SEAL
noun
  1. From our crowdsourced Open Dictionary
    sea air and land team: a member of an elite force in the US or other navy that carries out special operations

    The Thai Seals themselves went above and beyond. I would class them as heroes.

    Submitted from United Kingdom on 11/07/2018
     
TOEFL IELTS BNC: 4259 COCA: 4021
seal

noun¹

 1animal動物ADJECTIVE | VERB + SEAL | SEAL + VERB | SEAL + NOUN ADJECTIVE➤baby小海豹VERB + SEAL➤hunt捕獵海豹➤club用棍棒打海豹◇The ad criticized hunters for clubbing baby seals.這則廣告譴責用棍棒擊殺小海豹的捕獵者。➤cull (especially BrE) 選擇性捕殺海豹◇Environmentalists claim there is no reason to cull seals.環保主義者稱沒有理由對海豹進行選擇性捕殺。SEAL + VERB➤bask海豹曬太陽SEAL + NOUN➤pup小海豹➤colony海豹群▸➤cull (especially BrE) 對海豹的選擇性捕殺➤hunt獵殺海豹
seal

noun²

 2for a document文件ADJECTIVE | VERB + SEAL | PHRASES ADJECTIVE➤wax蠟封◇an official-looking letter with a wax seal帶有蠟封、看上去正式的信件➤presidential, privy, royal總統／私人／王室印章VERB + SEAL➤break開封條◇He broke the seal and opened the envelope.他撕下封條，拆開了信封。PHRASES➤a/the/sb's seal of approval正式批准◇Her report was given the seal of approval by senior management.她的報告得到了高級管理層的正式批准。
seal

verb

ADVERB | PREPOSITION ADVERB➤carefully, properly, tightly, well仔細密封；妥善密封；牢牢封住；封嚴實◇The containers must be carefully sealed so that no air can get in.這些容器必須仔細密封，以防空氣進入。➤completely完全密封◇The unit is completely sealed.這個裝置處於完全密封狀態。➤virtually實際上密封▸➤effectively有效地密封▸➤hermetically真空密封◇a hermetically sealed container真空密封的容器➤away, in, off, up封閉；封閉在裏面；封鎖；封上◇Police sealed off the area.警察封鎖了該地區。PREPOSITION➤from使與⋯隔絕◇The nuclear plant would be effectively sealed off from the world.該核電廠將與外界完全隔離開。➤with用⋯密封◇He sealed the bag tightly with tape.他用膠帶將袋子牢牢封住。
TOEFL IELTS BNC: 4259 COCA: 4021
seal verb
⇨ block 2 (a sealed plastic bag) ⇨ block 3 (seal the border)seal noun
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