He was an inventor. Thanks to him, we have lightning rods and bifocal glasses.
他是一位发明家。多亏了他，我们才有了避雷针和双焦点眼镜。
Bifocal glasses
原声例句
who was 系列
英语百科
Bifocals
Bifocals are eyeglasses with two distinct optical powers. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism.
- comptodacytylism的意思
- comptograph的意思
- comptograph的意思
- comptoir的意思
- comptomenter的意思
- comptometer的意思
- comptometer的意思
- comptometre的意思
- Compton的意思
- Compton absorption的意思
- Compton absorption coefficient的意思
- Compton, Arthur Holly的意思
- Compton attenuation and scattering的意思
- Compton attenuation coefficient的意思
- Compton background contribution的意思
- comptonburnett的意思
- compton collision的意思
- Compton Community College的意思
- compton continuum的意思
- Compton cross section的意思
- Compton edge的意思
- Compton Effect的意思
- Compton effect laser的意思
- Compton effect,scattering的意思
- Compton electrometer的意思