lenses

• She heard the tinkle of the broken lens .
  她听到透镜当啷一声撞碎了。
• Fit smoked plastic lenses in spectacles .
  把烟色的塑料镜片安在眼镜上。
• Displacement of the lens is not uncommon .
  晶体脱位是常见的疾病。
• These sandstone bodies form elongate lenses .
  这些砂岩体形成伸长的透镜体。
• Light is condensed by means of lenses .
  光线可藉透镜集聚之。
• A typical lens has a focal length(f)of 625 mm .
  常见镜头的焦距（f）为625毫米。
• By definition a cataract is an opacity in the lens .
  白内障的定义就是晶状体混浊。
• Immediately behind the iris is the crystalline lens .
  紧靠着虹膜后面的是水晶体（眼球）。
• With special lenses and prisms we can manipulate this light .
  我们可以用特殊透镜和棱镜处理这种光线。
• Skin cells just in front of them differentiate to form lenses .
  它们前面的皮肤细胞就分化而形成晶体。