Before leaving, the scientists decided to test the equipment they would use to detect airborne nitryl chloride on the cruise by sampling the air in Boulder, a mile above sea level.

离开之前，科学家们决定通过抽样检测海拔一英里的博尔德市的空气，对在旅程中将会用来检测空气中硝基氯含量的设备进行检验。

Huge as it is, the LHC doesn't look too impressive from the air since the actual 17-mile (27 km) tunnel lies buried an average 330 feet (100 meters) underground.

虽然LHC身躯庞大，但从空中看它给人的印象并不深刻，因为它17英里(27公里)长的隧道埋在地下的平均深度330英尺(100米)。

You're paid by the mile and then give money for air transportation back home.

你将获得以公里为单位计算的报酬，以及回家的机票。