sunglasses
n.
glasses with darkened lenses to protect one's eyes while observing the sun, also sun-glasses, 1878, from sun, n. + glasses. In popular (non-astronomy) use from 1916. Earlier sunglass (1804) meant a burning glass.
| 词汇 | sunglasses | 
| 词根词缀 | Online Etymology Dictionary sunglasses n. glasses with darkened lenses to protect one's eyes while observing the sun, also sun-glasses, 1878, from sun, n. + glasses. In popular (non-astronomy) use from 1916. Earlier sunglass (1804) meant a burning glass. | 
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