单词：navigations
(navigation 的复数) n. 航行, 航海, 导航
[经] 航空, 航海, 航船
[经] 航空, 航海, 航船
plural of navigation
n. the guidance of ships or airplanes from place to place
n. ship traffic
n. the guidance of ships or airplanes from place to place
n. ship traffic