Glasses, Goggles, Sunglasses, and Shades

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Glasses or eyeglasses are used to help a person see better. They are usually made of a metal or plastic frame and two lenses that improve vision.

Glasses or eyeglasses（眼镜）是用来帮助人们看得更清楚的。它们通常由一个金属或塑料框架和两个镜片组成，可以改善视力。

Goggles are used to protect the eyes from dust, debris, water, or other things that can harm the eyes. Goggles usually have a rubber or plastic frame with a strap that fastens around the back of the head, and often plastic lenses, and they fit closely to the face creating a seal so nothing can get in the eyes. Some kinds of goggles are swimming goggles, safety goggles, and ski goggles.

Goggles（护目镜）是用来保护眼睛免受灰尘、碎片、水或其他可能伤害眼睛的东西的伤害。护目镜通常有一个橡胶或塑料的框架，在头的后面系上一条带子，通常是塑料镜片，它们与脸部紧密贴合，形成密封，所以任何东西都不会进入眼睛。护目镜的种类有游泳护目镜、安全护目镜和滑雪护目镜。

Sunglasses are used to shade the eyes from sunlight. They are usually made of a plastic or metal frame and two lenses that are darkened to filter out light. Sunglasses can have prescription lenses like eyeglasses, but they can also have lenses that are not for correcting vision.

Sunglasses（太阳镜、墨镜）是用来给眼睛遮挡阳光的。它们通常由一个塑料或金属框架和两个镜片组成，镜片变暗以滤光。太阳镜可以像普通眼镜一样有医学镜片，但也可以有非矫正视力的镜片。

Shades is an informal word for sunglasses.

Shades是sunglasses（太阳镜）的非正式说法。