| 单词 | trifocal |
| 释义 | tri·fo·cal (trī-fōkəl, trīfō′-)adj. 1. Having three focal lengths. 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. n. 1. A lens having three focal lengths. 2. trifocals Eyeglasses having trifocal lenses. |
| 随便看 |
英语词典包含135693条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。