光线的英文：
optical line
optical cable
light ray

参考例句：

Thin light.
暗淡的光线

Is the light good enough to take photographs?
光线适合照相吗？

occlude light;occlude the flow of blood.
遮蔽光线;止血

The interior was dark and smelled of mildew
里面光线很暗，霉味扑鼻。

Emission and propagation of energy in the form of rays or waves.
发射以光线或波的形式发出和传播能量

strong light;strong vinegar;strong cologne.
强烈的光线;味道很浓的醋，浓郁的古龙香水

A lightproof case with photographic film that can be loaded directly into a camera.
可直接装入照相机中，内放照相胶卷的防止光线进入的小盒子。

Everything was close and palpitant, and vibrant with the strong light.
每一件物体都显得很近，都在颤动，都在同强烈的光线一起振动。

As it grew too dim, the umpire decided to postpone the decisive game in this semifinal to tomorrow
因为光线太暗，裁判决定这场半决赛的决胜盘推迟到明天举行。

storied Windows richly dight,/ Casting a dim religious light(John Milton.
以历史故事装饰富丽堂皇的窗户，投射了一丝模糊的宗教光线(约翰·米尔顿)。

optical是什么意思：
adj. 眼睛的，视觉的；光学的

Optical brightener(Optical brightness agent): Synonymous with Optical bleaching agent.
光学增光剂:即光学漂白剂。

Optical depth and optical path are often confused in the literature.
文献中光学厚度和光程时常混淆。

A computer that is made of optical fiber and various optical elements
一种利用传递光信号的光纤与各种光学元件相结合而制成的计算机。

line是什么意思：
n. 线条，界线，路线；条纹；排；铁路线；生产线；台词；态度；防线；前线
v. 用线标出，划线于；使布满纹络；加衬里于；排队，排列成行

This is a lined trunk.
这是一个有衬里的箱子。

They are politically in line.
他们在政治上意见一致。

On a map there are horizontal lines and vertical lines.
在地图上有水平的线和垂直的线。

cable是什么意思：
n. 缆；索；电缆
v. 缚住

open link cable
开口链环锚链

anchor cable stopper
锚链制动器

clutch control cable
离合器控制电缆