单词详解

1. n. [C]

A. [C] 【动】海豹 ( any of numerous marine mammals that come on shore to breed chiefly of cold regions)

The first time I saw a seal was in an aquarium. 我第一次看见海豹是在水族馆里。

The seal is a kind animal. 海豹是一种温顺的动物。

B. 印章，图章，印信 (a device incised to make an impression, used to secure a closing or to authenticate documents)

The government affixed its seal to the document. 政府在文件上盖了印。

C. 封（印），封印纸，蜂蜡，封签 (fastener consisting of a resinous composition that is plastic when warm, used for sealing documents and parcels and letters)

The envelope’s seal was torn open. 信封的封缄被撕开了。

The seal on this package is broken. 这个包装袋的密封纸破了。

2. vt.

A. 封，密封 [(+up)] (close with or as if with a seal)

She sealed the letter with hot wax. 她用热蜡将信封住。

I forgot to seal the letter before mailing it. 我忘记在寄信前将信封上了。

He signed and sealed the document. 他在文件上签字加封。

We must seal up the envelope before mailing the letter.

我们在寄信前必须先将信封密封。

B. 盖章，盖印于 (make tight, secure against leakage)

The treaty was signed and sealed by both governments.

条约已经由两国政府签字盖章。

相关词组

1. seal off 封闭，封锁

The police sealed off this area. 警察封锁了这一带。

2. under seal adj. 盖上公章的（签定）

He produced a written contract under seal. 他出示一张盖有公章的合约。

相关单词

复数：seals

过去式：sealed

过去分词：sealed

现在分词：sealing

第三人称单数：seals