lens
noun [ C ] uk/lenz/ us/lenz/
(GLASS)
镜片，镜头，透镜
a curved piece of glass, plastic, or other transparent material, used in cameras, glasses, and scientific equipment, that makes objects seem closer, larger, smaller, etc.
a camera with a zoom lens 变焦（镜头）照相机
隐形眼镜（同 contact lens）
→ contact lens
(EYE)
（眼球的）晶状体
the part of the eye behind the pupil (= the black hole at the front of the eye) that helps you to see clearly by focusing (= collecting) light onto the retina