It sustains the world system on the lower planes.

它维持着世界体系的较低层面。

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You will always experience tests, challenges and circumstances to help you awaken to the great potential within and to move beyond the illusion of the lower planes.

你们会不断地经验试炼、挑战与环境以帮助你们对于在你们之内的巨大潜力产生觉醒，并且超越较低水平的幻象。

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In the 1960s and 1970s, most personal and corporate planes were propeller or turbo-prop aircraft, which fly at a lower altitude than jetliners.

在1960和1970年代，大部分个人和企业的飞机是飞行高度低于喷气式飞机的螺旋桨式或涡轮螺旋桨式飞机。

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It is entirely possible that if there were no oil or gas exports then oil or gas prices would be lower in the US. But if there were no Boeing exports then the price of jet planes might be lower, no GM exports then the price of cars might be lower, no tortillas made of Iowa corn then corn flakes might be cheaper.

FORBES: Lou Dobbs and Bill O'Reilly Don't Seem to Understand Exports

JetBlue says that Bradley was simply overwhelmed by too many diversions, and that its grounded flights were lower priority than bigger international planes.

WSJ: How Snow (and Libyan Soldiers) Led to Airport Logjams

Colin Le Ray said the system allowed planes to land in lower visibility by giving guidance to pilots, particularly when the cloud base was low.

BBC: Fog 'causes disruption' at Guernsey Airport