天真真切切
navigation [,nævi'ɡeiʃən] n.1. 航行，航海，航空2. 领航，导航3. 航运；水上运输4. 航行学，航海术5. 领航术，导航术6. (乘车人的)给司机指点行车路线7. [方言]内河水道；运河navigation [,nævi'ɡeiʃən] n.1. the guidance of ships or airplanes from place to place2. ship trafficthe channel will be open to navigation as soon as the ice melts 3. the work of a sailor以上来源于: WordNet
