单词	seal
释义	noun | verb sealseal1 /sil/ ●●○ noun [countable] Etymology ETYMOLOGYseal1 Origin: (1) Old English seolh 1animal a large sea animal that has smooth fur, eats fish, and lives around coasts, especially in cold areas2to stop water/dirt entering a piece of rubber or plastic used on a pipe, machine, container, etc. to prevent air, water, dirt, etc. from going into or out of it:  an airtight seal3on new container a piece of wax, paper, etc. that you have to break in order to open a new container:  Check that the seal on the medicine has not been broken.4special mark a)a mark that has a special design and shows the legal or official authority of a person or organization:  stationery decorated with the Texas state seal b)an object used to make this mark5stamp a special type of stamp with a picture on it, that you cannot use to mail a letter but that is bought to help a charity6seal of approval if you give something your seal of approval, you say that you approve of it, especially officially:  The project has received the city council’s seal of approval.7under seal information or documents that are under seal are kept secret, especially by a court of law:  Court papers regarding pretrial information are under seal.[Origin: (1) Old English seolh] noun | verb sealseal2 ●●○ verb [transitive] Verb Table VERB TABLE seal Simple Form Present I, you, we, they seal he, she, it seals Past I, you, he, she, it, we, they sealed Present perfect I, you, we, they have sealed he, she, it has sealed Past perfect I, you, he, she, it, we, they had sealed Future I, you, he, she, it, we, they will seal Future perfect I, you, he, she, it, we, they will have sealed Continuous Form Present I am sealing he, she, it is sealing you, we, they are sealing Past I, he, she, it was sealing you, we, they were sealing Present perfect I, you, we, they have been sealing he, she, it has been sealing Past perfect I, you, he, she, it, we, they had been sealing Future I, you, he, she, it, we, they will be sealing Future perfect I, you, he, she, it, we, they will have been sealing Thesaurus THESAURUSshut► close to make something stop being open, or to start covering an opening:  The door closed silently behind us. Close the curtains – it’s getting dark. ► shut shut means the same as close:  Shut the door – it’s freezing outside. ► slam to close a door, lid, etc. with a lot of force and a loud noise:  In her anger, Maria went around the kitchen slamming the cupboard doors. ► seal (up) to close an entrance, container, or hole with something that stops things from going in or out:  A large rock sealed up the entrance to the cave. 1entrance/container (also seal up) to close an entrance or a container with something that stops air, water, etc. from coming into or out of it:  The doorway had been sealed up with bricks.► see thesaurus at close12envelope/package to close an envelope, package, etc. by using something sticky to hold its edges in place:  She sealed the box with clear tape.3building/country if a building, area, or country is sealed, no one can enter or leave it:  The country has sealed its borders.4seal a deal/agreement/promise etc. to do something that makes a deal, agreement, etc. more formal or definite5seal somebody’s fate to make something, especially something bad, sure to happen:  Rogerson’s fate was sealed when he got behind the wheel of his car, completely drunk.6seal a victory/win to make a victory certain:  His three-point shot sealed the victory.7keep secret if a court of law or a business seals information, documents, offers, etc., they keep them secret → unseal8wood to cover the surface of something with something that will protect it:  The stain both colors and seals the wood. → see also my lips are sealed at lip (5)seal something ↔ in phrasal verb to stop what something contains from getting out:  Cook the meat over a high heat to seal in the juices.seal something ↔ off phrasal verb to stop people from entering an area or building, because it is dangerous:  Police have sealed off the area.
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