Meaning of guāng xiàn:
光线
light ray; CL:條|条[tiao2],道[dao4]; light; illumination; lighting (for a photograph)
Tàiyáng de guāngxiàn tòuguò chuānghù shè jìn fángjiān lǐ.
太阳的光线透过窗户射进房间里。
The sunlight rays shine through the window into the room.
Zǎo chén de yáng guāng shè jìn fáng jiān, guāng xiàn chōng mǎn le wēn nuǎn.
早晨的阳光射进房间，光线充满了温暖。
The morning sunlight streamed into the room, and the light was filled with warmth.
Zhè jiān fángjiān de zìrán guāngxiàn hěn míngliàng.
这间房间的自然光线很明亮。
The natural light in this room is very bright.
Fángjiān lǐ de guāngxiàn fēicháng róuhé.
房间里的光线非常柔和。
The illumination in the room is very soft.
Pāizhào shí, guāngxiàn xūyào chōngzú, yǐ quèbǎo zhàopiàn de qīngxīdù.
拍照时，光线需要充足，以确保照片的清晰度。
When taking a photo, the lighting needs to be sufficient to ensure the clarity of the picture.
