英语语法分析

There is also a network of dirt airstrips, which was fortunate for me, as I had no time for the two-and-a-half week trek to my destination.

这里还有一个布满灰尘的机场跑道网，我还是觉得庆幸，因为我没有时间长途跋涉两周半到达目的地。

These targets consist of three mock airstrips and two concrete pads.

这些目标分别由三条模拟机场跑道和两个水泥平台组成。

It would need a vast infrastructure including roads, river ports, tracks, airstrips.

它需要公路，港口，机场这些基础设施。