This is not what I asked for, I told myself, as I slipped the door keys into an envelope, sealed it and pinned the envelope to the wall just inside the front door.

在我把门钥匙塞进一个信封、封住口并把信封钉在前门里面的墙上时，我告诉自己说，这不是我所寻求的。

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The wall is one of the most important parts in the envelope of residential buildings.

墙体是建筑围护结构的重要组成部分。

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The relevance conditions of interlayer ventilation wall are big envelope, big fresh air and big air conditioning loads buildings.

分析了夹层通风墙体的工程适用条件，夹层通风墙体适用于外墙面积大、新风量大、空调负荷大的建筑。

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"We must also recognize that we're working at the edge of the operational envelope, " Wall said.

CNN: Pilots dead after Patriot accident