航运的危害

藉由许多暗礁上强烈涌流的交互作用地质是新的航行危险的持续不断出现情形和发展是迅速的。

navigational

leading light【水运】;navigational light【航】

navigational system【航】;radio navigation system【航】

navigational instrument

marking a navigational route buoy

marking a navigational route

SUPPORTS for surveying or navigational instruments

international navigational route【交】