seal

音標(biāo)發(fā)音

1230年左右進(jìn)入英語(yǔ)，直接源自古法語(yǔ)的seel；最初源自通俗拉丁語(yǔ)的sigellum，意爲(wèi)把設(shè)計(jì)圖案印在蠟上。

adj性質(zhì)的同根詞
sealed：密封的；未知的。
n性質(zhì)的同根詞
sealing：封閉，[機(jī)]密封；補(bǔ)鑄件的漏洞；獵捕海豹業(yè)。
sealant：[機(jī)]密封劑。
sealer：蓋印人；檢騐員；密封層；捕海豹的船或獵人。
sealskin：海豹皮；海豹皮衣。
v性質(zhì)的同根詞
sealed：封閉；蓋印（seal的過(guò)去分詞）。

seal用作名詞時(shí)的意思是“印章”,轉(zhuǎn)化爲(wèi)動(dòng)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(dòng)詞,接名詞、代詞作賓語(yǔ)。
seal作動(dòng)詞指“密封”時(shí)，可以用seal the letter或seal the envelope表示“把信件密封”。

(ANIMAL) a large mammal that eats fish and lives partly in the sea and partly on land or ice
(COVERING) something fixed around the edge of an opening to prevent liquid or gas flowing through it
(MARK) an official mark on a document, sometimes made with wax, that shows that it is legal or has been officially approved
(COVERING) to close an entrance or container so that nothing can enter or leave it
(MARK) to make an agreement more certain or to approve it formally

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