主系统包括：驾驶舱灯光、客舱灯光、外部灯光及应急灯光。本文中，我们将只讲驾驶舱灯光。

The major systems are: flight compartment lights, passenger compartment lights, exterior lights and emergency lights. In this lesson, we will introduce the flight deck lighting only.

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主人曾经居住过的主屋照明条件很差，湿度很高，它整天都需要灯光和加热器，直到入夏。

The main house which the owner had lived had a bad condition for lighting and the humidity was high, it needed a light all day and a heater until beginning of summer.

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主材为钢材和混凝土，家具选用与之形成鲜明对比：温暖的灯光衬托出舒适的布艺沙发与座椅。

The furniture is selected to contrast with the steel and concrete, with comfortable fabric chairs and sofas along with warm lighting.

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