navigational是什么意思?

navigational的中文含义详细解释：
a. 导航的(航海的)
navigational的列举例句：
Not having proper navigational aids the pilot had been unaware of the changing conditions and had flown the plane right into the eye of the tropical storm.
由于没有适当的导航援助，飞行员不了解周围气候的变化情况，将飞机直接飞入了热带飓风眼内。