A key was enclosed in the envelope.

信封中装有一把钥匙。

There should be some envelopes floating about somewhere.

我这有些信封。

Have you ordered in enough envelopes this month?

这月订足信封了吗?

I folded the letter and then put it into the envelope.

我把信折好后放进信封。

Make sure the stamp is properly glued to the envelope.

务把邮票在信封上贴好。

He redirected the address on his envelope.

他改了一下信封上的地址。

She puzzled over the postmark on the letter.

她想弄明白信封上的邮。

Addressing envelopes all day long is dreary work.

成天给信封写地址是一种沉闷单调的工作。

We've gone through all those envelopes I bought last week.

我们用完了我上周买的所有的信封。

I like to keep a few envelopes about in case I need them.

我喜欢手边常有几个信封, 以不时之需。

Before posting a letter, you should enclose it in an envelope.

在把信寄出之须把它装入信封内。

I began grubbing about in the waste-paper basket to find the envelope.

我开始在废纸篓乱翻，想要找到那个信封。

We seal the back of envelopes.

我们把信封的背面封上。

He deftly folded the typed sheets and replaced them in the envelope.

他灵巧地将打有字的纸折好重新放回信封 。

Annie stamped the envelope for her.

安妮替她在信封上贴了邮票。

She sealed the letter.

她把信封上了。

Please enclose a self-addressed envelope.

请在面附一个写作自己地址的信封。

An aerogramme is writing paper, envelope, and postage all-in-one.You can get aerogrammes at any post office.

航空信就是信纸、信封和邮资全在一起的信件，可以在任何一个邮局买到航空信。

Stick down the envelope

把信封贴牢。

Sherry discreetly opens up the safe and sees that the envelope addressed to the District Attorney contains Keith's secret microcassette.

雪莉偷偷地打开了保险柜，看到信封上所写的地址是寄给地区检察官的，面装的是基思偷录的那盘录音带。