1·They are flying from airport to airport, checking runways and monitoring airfields.
他们从一个机场飞往另一个机场，检查跑道和监测机场。
2·Aeroplane cargo faces even tighter restrictions on shape and size, not to mention the need for runways.
飞机货运对形状和大小有更加严格的限制，更不必说对跑道的依赖。
3·These usually small aircraft are equipped to land on small rugged runways or, in the case of floatplanes, lakes and rivers.
这些飞机通常是一些可以降落在粗糙跑道上的小飞机，也有可以降落在水面上的水上飞机。
4·The airport management wants to build new runways to increase capacity but can only do so by filling in 900 acres of the bay.
机场管理者想建一些新跑道来增加机场容量，但这只能通过填埋900亩海湾来实现。
5·Flashing lights on runways, however, are less effective.
不过，跑道上的闪光灯很少有效。