一、详细释义：


n.

信封；包裹


例句：

Double your letter up before putting in into the envelop.

装信封前先把信折叠好。


例句：

The papers are falling out of the envelop, push them back.

论文从封袋里掉出来了，把它们放回原处。


v.

包围，包住；笼罩，遮盖 [T]


例句：

That lovely, rich fragrant smell of the forest enveloped us.

森林那种美妙、馥郁的香气笼罩了我们。


例句：

Gloom enveloped the household.

沮丧的气氛笼罩着这一家子。


二、词义辨析：


enclose,encircle,envelop,fence,surround

这些动词均有“包围”之意。 enclose指把某物四周围住或封闭起来，使之与外界隔绝。 encircle侧重在某事物周围围成圈状。 envelop着重指把某个物体完全包起来或整个封起来。 fence通常指用栅栏栏开或围起来。 surround普通用词，既可指环绕、围绕，也可指军事上的包围。


三、参考例句：


If I am lucky, I can get a gift or a red envelop, too.

如果幸运的话，我还可以得到礼物或红包哩！


The papers are falling out of the envelop, push them back.

论文从封袋里掉出来了，把它们放回原处。


Explosions release huge clouds of gas that envelop the surrounding area.

爆炸释放出巨大的气体云会要覆盖周围地区。


As the benefits of basic education envelop the entire Chinese population, the stumbling block for this most basic level of reading has been removed.

随着整个中华民族都可以享受到基础教育，读书认字最基本的绊脚石已经不存在了。