Window envelopes: A style of envelopes in which a clear panel has left in the front so as to show the name and address typed on the letter to be posted.
窗口信封:信封的一种款式.信封前面开一个空框,露出待寄信上的姓名和地址。
I want to register this letter, but I believe I have to go to another window.
我想把这封信寄挂号，看来我得到别的窗口去办。
The information is sent in a sealed envelope.
信息用封口的信封寄出。
a self - sealing envelope.
（不用胶水）封口的信封
an adhesive envelope
封口涂有胶水的信封
The ( flap of the ) envelope was unstuck.
信封（的封口）没粘住.
stick down(the flap of)an envelope
粘住信封（的口盖）.
tuck the flap of an envelope in
把信封的口盖摺进信封里.
The information is send in a sealed envelope.
信息是放在一个封口信封里发走的。
The manager dictated a letter to his secretary.
经理向秘书口授一封信。
She dictated a letter to her secretary.
她向秘书口授一封信。
The flap of the envelope has come unstuck
这信封的口没粘牢，开了。
steam open an envelope.
用蒸汽把信封口嘘开.
I broke the seal and read.
我撕开封口，开始念信。
gum down the flap of an envelope
用胶粘住信封的盖口
-- As regards these, he began.
“至于这封信，”他开口说。
I licked the flap of the envelope and sealed it
我舔了舔信封盖口,把它封好
I lick the flap of the envelope and sealed it.
我舔了舔信封盖口,把它封好。