bifocals怎么读
音标：英 [baɪ'fəʊkəlz]
美[,baɪ'foklz]
bifocals是什么意思
- n. 远视近视两用的眼镜
bifocals的词态变化
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.
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