光谷的英文：
optical valley

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。

optical sighting device
光学照准器

A kaleidoscope is an optical toy.
万花筒是一种光学玩具。

Valley glaciers are confined to valleys in mountainous terrain.
山谷冰川只限于多山地带的山谷。

In spring, the valleys are ablaze with colour.
春天，山谷里春色绚烂。

Farmers worked the fertile valleys.
农民们在肥沃的山谷里耕种。

Murray Valley encephalitis virus
墨累溪谷脑炎病毒

The river valley is intensively cropped.
河谷里种满了庄稼。