bifocals
Word family adjectivebifocalnounbifocals
bi·fo·cals /baɪˈfəʊkəlz $ ˈbaɪfoʊ-/ noun [plural] MDspecial glasses with an upper part made for seeing things that are far away, and a lower part made for reading 双光眼镜〔镜片上部用以看远处物体,下部用以阅读的眼镜〕 —bifocal adjectiveadj