envelope

英 [ˈenvələʊp]

美 [ˈenvəloʊp]

n. 信封; 塑料封套; 塑料封皮

复数：envelopes　第三人称单数：envelopes　

Oxford 3000 / Collins.2 / BNC.3672 / COCA.3879

习惯用语

push the envelope

超越界线；突破
to go beyond the limits of what is allowed or thought to be possible
He is a performer who consistently pushes the envelope of TV comedy.
他是一个在电视喜剧表演中不断寻求突破的演员。

noun

信封
Anenvelopeis the rectangular paper cover in which you send a letter to someone through the post.
PHRASE 挑战限制尺度；突破原有底线
If someonepushes the envelope, they do something to a greater degree or in a more extreme way than it has ever been done before.
1. There's a valuable place for fashion and design that pushes the envelope a bit...
  在原有尺度上有所突破的时尚和设计受到人们的重视。
2. No cinema director had a more profound effect in pushing the envelope of acceptable family entertainment.
  在挑战家庭娱乐片的接受程度方面，没有哪个电影导演比他的影响更深远。

noun

any wrapper or covering
a flat (usually rectangular) container for a letter, thin package, etc.
the bag containing the gas in a balloon
Synonym:gasbag
the maximum operating capability of a system (especially an aircraft)
1. test pilots try to push the envelope
a natural covering (as by a fluid)
1. the spacecraft detected an envelope of gas around the comet
a curve that is tangent to each of a family of curves

Fold the letter and put it in an envelope.
将信折好放进信封。
She recognized her mother's grace handwriting on the envelope.
她认出信封上她母亲那娟秀的笔迹。
Please enclose a self-addressed envelope.
请附上写明姓名地址的回邮信封。
No cinema director had a more profound effect in pushing the envelope of acceptable family entertainment.
在挑战家庭娱乐片的接受程度方面，没有哪个电影导演比他的影响更深远。
He began to slit open each envelope
他开始裁开每个信封。
She opened the perfumed envelope.
她打开了带有香味的信封。
Liz picked up the blue envelope and turned it over curiously
莉兹拿起蓝色信封，好奇地翻过来看。
He tore open the creamy envelope that had been enclosed in the letter
他撕开了随信寄来的奶油色信封。
If you turn the envelope upside down, the key will fall out.
你如果把信封倒过来，钥匙就会掉出。
Return the enclosed Donation Form today in the prepaid envelope provided.
请于今日将随函附上的捐款表格用所提供的邮资预付的信封寄回。