Any lights in the vicinity of the navigation aids or navigational lanes that jeopardize navigation safety shall be properly screened. 航标和航道附近有碍航行安全的灯光，应当妥善遮蔽。
Urban dominant industry is an important underpinning of regional economic development, and is a navigation mark of regional industry modernization. 摘要区城城市主导产业是区城经济发展的主要支柱，是区域产业现代化的航标。
