英 [ˈenvələʊp] 美 [ˈenvəloʊp]
n. 信封，封皮；气囊；（彗核）包层，彗发；（数学）包络线，包络面；（生物）包膜；极限数据
复数envelopes
envelope /ˈɛnvəˌləʊp, ˈɒn-/ CET4 TEM4
可数名词 An envelope is the rectangular paper cover in which you send a letter to someone through the mail. 信封
习语 If someone pushes the envelope, they do something to a greater degree or in a more extreme way than it has ever been done before. 挑战极限; 突破常规
There's a valuable place for fashion and design that pushes the envelope a bit.
突破点儿常规的时尚和设计有其宝贵地位。
a flat rectangular paper container for papers
any wrapper or covering
a curve that is tangent to each of a family of curves
a natural covering (as by a fluid)
the spacecraft detected an envelope of gas around the comet
the maximum operating capability of a system
test pilots try to push the envelope
the bag containing the gas in a balloon
同义词： gasbag
信封
信封
信封
信封
包迹
封头
波封
包线
封皮
包膜
外膜
包被
囊膜
被膜;总苞;包膜
包络线
包络
包络
封包
包迹
包线
波封
分封线
封套
包
封
包封
包络
被膜
胞质鞘
SOAP信封（Envelope） ：定义了一个框架，该框架描述了消息中的内容是什么，包括消息的内容、发送者、接收者、处理者以及如何处理这些消息。
...在几何学中,某个曲线族的包络线（Envelope）,是跟该曲线族的每条线都有至少一点相切的一条曲线.（曲线族即一些曲线的无穷集,它们有一些特定的关系.
任意单参数系列的封套（envelope）是一个成为偏微分方程的通积分的解. 整个两参数系列的封套是一个称为偏微分方程的奇异积分的解.
建筑的包络(Envelope)是最古老最原始的建筑元素之一，它将室内与室外、自然与人工进行了实体的划分；它界定了私有和公共归属之间的关系。
enveloped 包围（envelop的过去分词）
enveloping 包封；遮盖（envelop的ing形式）
envelop 包围；包封；遮盖
信封，封皮；包膜；[天]包层；包迹
She opened the perfumed envelope.
她打开了带有香味的信封。
He stuck a stamp on the envelope.
他把一张邮票贴到信封上。
He began to slit open each envelope.
他开始撕开每个信封。
And he pushed the envelope on salaries. He realized he was in this massive media market in New York.
VOA : special.2010.07.26
And you say, " "Oh, thank God. Don't open the envelope," and you drink the milkshake, disregarding the facts.
而你说，“看在上帝份上，别打开信封“,然后你喝了奶昔，无视了这些事实。
死亡课程节选 : 耶鲁公开课
You really believe, and it is in fact the case that the things written down in the envelope are true.
你真的相信，而事实上,信封里写的那些事都是真的。
死亡课程节选 : 耶鲁公开课
She found an envelope in the jar with the message: "I hope this money will help you and your family in these rough times."
VOA : special.2010.02.05
"It is in a white envelope with a red stamp," Germont said.
VOA : special.2009.12.26
These numbers tell us that we are probably underestimating the technological change about to envelope us.
FORBES: Clean Energy Innovation: An Unstoppable and Volatile Force
Too much outside of the standard envelope and you have to start asking questions.
That player is chosen on Saturday night before the matches and put into a sealed envelope.
AE中的Envelope对象：也成为包络线（bounding box），是一个矩形区域，它定义了一个要素（feature）的空间范围，是每个几何体的最小外接矩形。 所有的几何对象都有Envelope属性。 主要接口有IEnvelope，其对应的方法及作用有： （1）CenterAt：通过改变Envelope的中心点来移动Envelope； （2）Putcoords：指定坐标点来建立Envelope 代码实现： IEnvelope pEnv= new EnvelopeClass（）； pEnv.Putcoords(1,2,2,1);