绝缘结构，并创建一个可密封的信封。
The structure insulates and creates an envelope that can be sealed.
并不是用记号笔写下来，装进一个十分密封的信封里，最后用万能胶粘起来。
It's not written in permanent marker and sealed in a security envelope with super glue.
不过《洛杉矶时报》曾在一次颁奖典礼前公布了获奖名单，这次事件之后，从1941年开始学院便将获奖者的名单放在密封的信封中，直到典礼现场才公布[3]。
This method was used until the Los Angeles Times announced the winners before the ceremony began; as a result, the Academy has used a sealed envelope to reveal the name of the winners since 1941.[3]
申请者须要求自己就读的各个院系提供一份由信封密封的正式成绩单。
the applicant should request each institution attended to provide an offlcial transcript in a sealed envelope.
紧急条件使用的安全密码放在一个密封信封中，宇航员只有在必要情到况下使用，Ivanovsky过于紧张没有按照预定的程序执行。
The security code for use in emergency was supposed to stay in a sealed envelope for the cosmonaut to open only if necessary, but Ivanovsky was too nervous to stick with protocol.
搜过每一处可能藏东西的地方已经是半小时后了，他找到了见过的那个东西，一个密封的红色圣诞贺卡信封。
为确保推荐信的保密性，请推荐人将推荐报告置于信封内，密封后在信封口签名，再给申请者呈交。
TO ENSURE CONFIDENTIALITY, please enclose the report in an envelope and sign on the seal line before giving the report to the applicant for submission.
如果你本人递交证件，只有校方信封保持密封才可以被认为是正视的。
If you forward the transcripts yourself, they can be considered official only if the school envelope has remained sealed.
如果你本人递交证件，只有校方信封保持密封才可以被认为是正视的。
If you forward the transcripts yourself, they can be considered official only if the school envelope has remained sealed.
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