Five tons of soil would fill a small dump truck; if spread over an acre, it would make a layer slightly less than the thickness of a dime.

五吨的土会装满一辆小型自卸式卡车；若铺开在一英亩的土地上，它会形成不足一角硬币厚度的土层。

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Right now, the test involves lying on your back while the arm of a special X-ray device moves over your body to measure the thickness of various bones.

现在，这项检测需要你躺下，同时一个特别的如手臂一样的X光射线装置来回在你身体上移动来检测不同部位骨头的厚度。

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The glacier incurs stresses due to the change in the bed-rock topography it flows over, the lack of pressure in front of it and the reduction in thickness at the front.

由于它经过的床岩地势变化，以及它的前部缺乏压力，厚度缩小，冰川遭受到压力。

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With 102 holes drilled so far, hundreds of measurements have been made of ice thickness and snow cover over the 243km covered to date.

BBC: Arctic team: 'London, we have a problem'

Calabresi says his next step will be to look at changes in the fiber layer thickness in 100 patients over a period of three years.

CNN: Can an eye exam detect multiple sclerosis?

Firstly, the two wells are monstrously deep well, with over 3, 000 feet net shale thickness.

FORBES: UK Shale Gas: How Deep Is It?