The time and spatial effects of excavation considering variation of seepage free surface outside of foundation pit were further investigated.

进一步研究了考虑坑外渗流自由面随时间变化的基坑工程时间效应和空间效应。

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They say that they are drawn to the prospect of learning applications outside the classroom, though such lesson plans have yet to surface.

他们表示，尽管此类课程计划尚未浮出水面，但他们对课堂以外的学习应用前景很感兴趣。

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And, since they were created underground and not from flowing surface water, not all these passageways have an opening to the outside world.

并且，由于它们是在地下形成的，而不是由地表水流形成，所以并不是所有的通道都有通向外部世界的开口。

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To explore the surface of the moon, astronauts must be able to survive outside the protection of their spacecraft.

VOA: special.2009.07.01

It's these cells that are sitting at the surface here that are responsible for determining what becomes part of us and what stays outside.

位于肠道表面的细胞,决定了,吸收哪些分子而排出哪些分子

耶鲁公开课 - 生物医学工程探索课程节选

One of the other things that MHC1 does, in addition to marking yourselves as your own, is that it's capable of making combinations with all the different molecules that are present inside the cell and expressing them on the surface, and sort of showing them to the outside world.

HC1的另一项功能,除了给你标记一个独一无二的标签以外,MHC可以和细胞内所有不同的,分子结合 使其能够呈现在细胞表面,使其暴露于外界

耶鲁公开课 - 生物医学工程探索课程节选

This is the theory that life is not merely a surface scum which clings to the outside of planet Earth, but that living things, in the form of so-called extremophile bacteria which can tolerate infernal heat, penetrate several kilometres into the planet's interior.

ECONOMIST: Obituary

The authors suggest that a rapidly evolving technical to manage hydrates is to heat the pipes that carry the hydrocarbons to the surface, either through electric heaters or by circulating hot water around the outside of the pipe.

FORBES: BP's Big Box Removed From Leak As Gas Crystals Clog Uptake Pipe

Indeed, being focused on odors -- which themselves require air to move, or a surface to light on -- means that for my dogs, the street outside our apartment building is different each time we step out the door.

CNN: 'On Looking': The world you're not seeing