n.导航；航行；航海
Mechanics discovered problems with the plane's navigation system. 机械工发现飞机的导航系统存在问题。
Navigation is difficult on this river because of the hide rock. 因为有暗礁，在这条河上航行很困难。
The canal has been opened up to steam navigation. 运河已经可以航行轮船。
He studied navigation of his own motion. 他是自愿学航海的。
Naval officers must understand both the theory and the practice of navigation. 海军军官必须了解航海术的理论与实践。
adj.导航的；航行的
n.世界一周旅行；周游世界
