Usage note
光线表示光的线条或亮度。
guāng xiàn biǎo shì guāng de xiàn tiáo huò liàng dù。
光线 means the rays or brightness of light.
Context note
光线常用于照明、摄影和观察。
guāng xiàn cháng yòng yú zhào míng 、 shè yǐng hé guān chá。
It is often used with lighting, photography, and observation.
5 examples
房间里的光线很好。
fáng jiān lǐ de guāng xiàn hěn hǎo。
The light in the room is very good.
光线太强了。
guāng xiàn tài qiáng le。
The light is too strong.
拍照时要注意光线。
pāi zhào shí yào zhù yì guāng xiàn。
Pay attention to the lighting when taking photos.
这里的光线很暗。
zhè lǐ de guāng xiàn hěn àn。
The lighting here is very dim.
光线从窗户照进来。
guāng xiàn cóng chuāng hù zhào jìn lái。
Light came in through the window.
5 mini stories
摄影课上，老师讲了光线。
shè yǐng kè shàng， lǎo shī jiǎng le guāng xiàn。
In photography class, the teacher explained light.
她把桌子搬到光线好的地方。
tā bǎ zhuō zi bān dào guāng xiàn hǎo de dì fāng。
She moved the table to a place with good light.
光线变暗后，大家打开灯。
guāng xiàn biàn àn hòu， dà jiā dǎ kāi dēng。
After the light got dimmer, everyone turned on the lamp.
拍照前要看看光线。
pāi zhào qián yào kàn kàn guāng xiàn。
Check the lighting before taking photos.
光线从窗帘边照进来。
guāng xiàn cóng chuāng lián biān zhào jìn lái。
Light shone in from the side of the curtain.
Mini dialogue
教室的光线
A
教室的光线很好。
Jiàoshì de guāngxiàn hěn hǎo.
The light in the classroom is very good.
B
对，光线充足，看书不累。
Duì, guāngxiàn chōngzú, kànshū bù lèi.
Right, the light is sufficient, so reading isn't tiring.
打开窗帘
A
房间里光线有点暗。
Fángjiān lǐ guāngxiàn yǒudiǎn àn.
The light in the room is a bit dim.
B
我打开窗帘，让光线进来。
Wǒ dǎkāi chuānglián, ràng guāngxiàn jìnlái.
I'll open the curtains to let the light in.
Related words and contrasts
related
阳光
yáng guāng
sunlight
光线 is a general term for light; 阳光 is sunlight.
related
灯光
dēng guāng
lamp light
光线 is light; 灯光 is light from a lamp.