navigation light

• 安装在飞机、船舶或其他交通工具上的彩色灯（通常为红色、绿色或白色），用于标示其位置、航行方向或状态，尤其在夜间或能见度低时使用。

A colored light (typically red, green, or white) mounted on an aircraft, ship, or other vehicle to indicate its position, direction of travel, or status, especially during nighttime or low-visibility conditions.

1. Marine navigation lightB2formal

   A colored light (red, green, or white) displayed on a ship or boat to indicate its position, direction, and status to other vessels at night or in poor visibility.

   航行灯

   • The captain checked the navigation lights before sailing at dusk.
   • Red and green navigation lights help prevent collisions at sea.
   • All vessels must display proper navigation lights after sunset.

2. Aircraft navigation lightB2formal

   A set of lights on an aircraft (typically red on the left wing, green on the right, and white on the tail) used to signal its position and orientation to other pilots.

   航空导航灯

   • The pilot turned on the navigation lights before taxiing.
   • You can see the red and green navigation lights of the plane in the night sky.
   • Navigation lights are essential for safe flying in low visibility conditions.