太阳镜用英语叫做 "sunglasses." 来源是英文 "sun" 和 "glasses" 的结合。
例句:
I always wear sunglasses when I'm outside on a sunny day. (我在阳光明媚的天气里总是戴太阳镜)
She bought a pair of designer sunglasses. (她买了一副名牌太阳镜)
He lost his sunglasses while swimming in the ocean. (他在海里游泳时遗失了他的太阳镜)