We are, unfortunately, in a building up a large hill far from most of the campus, so a large portion of our upgrade costs would include dragging a new underground fiber up the slope to our lab.

很不幸的是我们的建筑在一个大山上而且远离校园的其他地区，所以我们的升级成本很大一部分花费是同上实验室斜坡的地下埋设光纤。

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The net production, natural returning and retaining amount of elements in aboveground portion were a markedly higher than that of underground in t.

红三叶群落地上部的净生产量、自然归还量和元素的存留量均显著高于地下部。

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The ride was surreal and very sad, with people glued to portable radios and then, when we exited the underground portion of the trip from Grand Central Station, we witnessed an unobstructed view on this bright sunny day of the tremendous smoke billowing from the site of the towers.

FORBES: A Very Personal Remembrance From 9/11

The British Transport Police, which patrols trains and the London Underground says a substantial portion of the pickpocketing is done by these organized groups.

WSJ: Pickpockets: The Low-Tech Security Risk

The current phase of production at the Ekati Diamond Mine includes ore sourced primarily from the lower grade, but high carat value, Fox open pit supplemented by underground production from the lower portion of the Koala kimberlite pipe and from the Koala North pipe.

FORBES: Harry Winston to Purchase Ekati Diamond Mine For $500 Million