bifocals的词源

英文词源

bifocals (n.)

"bifocal spectacles," 1899, see bifocal. Conceived by Benjamin Franklin, but called by him double spectacles.

中文词源

bifocals：双光眼睛

前缀bi-, 二。词根foc, 焦点，见focus.

该词的英语词源请访问趣词词源英文版：bifocals 词源，bifocals 含义。