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bifocals

英 [baɪ'fəʊkəlz] 美[,baɪ'foklz]
  • n. 远视近视两用的眼镜

TEM8

词态变化


形容词: bifocal;

中文词源


bifocals 双光眼睛

前缀bi-, 二。词根foc, 焦点,见focus.

英文词源


bifocals (n.)
"bifocal spectacles," 1899, see bifocal. Conceived by Benjamin Franklin, but called by him double spectacles.