0 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. -- 鏡片，鏡頭，透鏡
1 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 -- （眼球的）晶狀體
The mid-part of the head is covered with coarse tubercles and expands forwards; the eyes include a few, very large lenses.
Transparent lenses caused little distortion of the underlying grid.
As in the case of the non-cataractous diabetic lenses, detailed information concerning the diabetic type, disease duration, and treatment was not distributed.
Much of this is because the changes identified in the 1960s are viewed through different historical lenses.
Later, with the introduction of better-quality lenses, the camera obscura would have been used for painting.
The objective lenses required for cathodoluminescence must have long working distances, so choice is often limited and prices high.
The overwhelming majority of respondents in both groups used corrective lenses.
The overlying mudstone (in places mudstone-siltstone-sandstone alternations) is typically red and includes thin lenses or layers of dirty whitish caliche intervals.
