gwangsaekseong
photochromism
photochromisme
이 안경은 광색성이 있어서 햇빛에 노출되면 색이 변합니다.
I angyeongeun gwangsaekseong-i isseoseo haetbit-e nochuldoemyeon saek-i byeonhamnida.
These glasses have photochromism, so they change color when exposed to sunlight.
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