1. （照相機、望遠鏡等的）鏡頭由兩片或更多的透鏡組成的聯(lián)合體，有些還要加上其它的光學儀器，如棱鏡，用來成像以便觀看或攝影
   A combination of two or more such pieces, sometimes with other optical devices such as prisms, used to form an image for viewing or photographing.
2. 光線經過棱鏡時產生折射現(xiàn)象。
   Light is refracted when passed through a prism.
3. 棱鏡可以分解光線。
   A prism decomposes light.
4. 陽光穿過棱鏡時將分解成各種顏色。
   The sunlight will break into different colors through a prism.

棱的英語翻譯：

鏡的英語翻譯：