When finding abnormality of navigation aids, obstacles to impede the safety of navigation, floating objects and other abnormal circumstances to impede the safety of navigation是什么意思_When finding abnormality of navigation aids, obstacles to impede the safety of navigation, floating objects and other abnormal circumstances to impede the safety of navigation在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句