| 单词 | trifocal |
| 释义 | trifocal[trai'fəukl]a. 三焦距的n. 三焦距透镜, 三焦距眼镜 trifocal tri.fo.cal AHD: [trº-f½“k…l, trº“f½”-] D.J. [tra!6f*&k*l, 6tra!7f*&-]K.K. [tra!6fok*l, 6tra!7fo-]adj.（形容词）1. Having three focal lengths.三焦距的：有三个焦距的2. Having one section that corrects for distant vision, a second section that corrects for medium vision, and a third that corrects for near vision, as an eyeglass lens.远中近三用的：具有分别校正近距离视觉、中距离视觉和远距离视觉的三个部件的，如目镜透镜n.（名词）1. A lens having three focal lengths.三焦距透镜2. trifocals Eyeglasses having trifocal lenses.trifocals 有三焦距镜片的眼镜 |
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