varifocal
adjective mainly UK uk/ˌveə.riˈfəʊ.kəl/ us/ˌver.iˈfoʊ.kəl/ (US progressive)
变焦距的
used to describe a lens (= a curved piece of glass) that allows you to see things clearly at various different distances
I have to wear thick varifocal glasses. 我必须戴上厚厚的变焦眼镜。
The lenses are varifocal, with three main areas that are blended into one to let you see sharply at all distances. 镜片是变焦的，三个主要区域融为一体，让你在任何距离都能看清。
- More examples
- I can't get used to my new varifocal glasses.
- Some camera lenses are varifocal to give an improved performance.
- Frames are designed for a wide range of prescriptions, including bifocal and varifocal lenses.