| 单词 | virtual |
| 释义 | virtual —virtuality, n. /verr"chooh euhl/, adj. 1. being such in power, force, or effect, though not actually or expressly such: a virtual dependence on charity. 2. Optics. a. noting an image formed by the apparent convergence of rays geometrically, but not actually, prolonged, as the image formed by a mirror (opposed to real). b. noting a focus of a system forming virtual images. 3. temporarily simulated or extended by computer software: a virtual disk in RAM; virtual memory on a hard disk. [1350-1400; ME < ML virtualis, equiv. to L virtu(s) VIRTUE + -alis -AL1] |
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