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单词
bifocals
释义
bifocals
NOUN
/baɪˈfəʊklz/
a pair of glasses with special lenses that let you see things that are near if you look through the bottom part , and see things that are far away if you look through the top part 双光眼镜（镜片下部可用来看近处物体，上部用来看远处物体）