| 摘要 |
<p>Protective spectacles for cutting onions, and for working in conditions with irritating odours for the eyes, have shaped lenses with flexible seals similar to swimming goggles. The spectacles are held in place by hooked ends looped over the ears. The spectacles can be shaped and coloured to suit fashion and can be different for men an women. The lenses are glass or plastic and can be plain or prescription design.</p> |
