An observer may pass through the same plane as many of the falling ice crystals near sunrise or sunset.
观察者在接近日出或日落的时候可以与这些冰晶穿过同一个平面。
For the Twin Otter plane - about the only plane that can operate up here - you need a flat area 305 metres long, 30m wide with an average of 60cm ice thickness.
而水獭式飞机——大概是唯一能够在此地出没的飞机——它需要一块长305米、宽30米、冰层平均厚度为60厘米的平坦区域。
The aim of it is the problem of screw twisting, nail pulling and screw twisting and ice plane.
其目的是拧螺丝、起钉子、拧螺钉、刨冰的问题。
The aim of it is the problem of screw twisting, nail pulling and screw twisting and ice plane.
其目的是拧螺丝、起钉子、拧螺钉、刨冰的问题。
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