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
A small disk of adhesive material used as a seal for papers.
封缄纸用于信件封口的小片粘着物
cascadelock steamer
冲流式(瀑布式)封口的蒸箱,瀑布式封口的蒸箱
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）.
an ice-bound ship, harbour
冰封的船、 港口.
Please seal your evaluation in an envelope, sign across the seal.
请将你的评估封左信封内，并夸过腊印封口签名。
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。
A hermetic seal is used at the top of this glass bottle.
这个玻璃瓶的口用密封条封着。
the blockading ships prevented delivery of munitions.
封锁船封锁港口阻止军需物品的运送。
cask-filling, closing, sealing or labeling cachine
用于桶装填、封口、密封或贴标签的机器
A hermetic seal is used at the top of this sample box.
这个样品盒的口用密封条封着。
The flap of the envelope has come unstuck
这信封的口没粘牢，开了。
The entrance of the cavern was boarded up
山洞的入口被封死了。
down-facing packer cup
开口朝下的封隔皮碗