单词 | infinity |
释义 | in·fin·i·ty (ĭn-fĭnĭ-tē) n. pl. in·fin·i·ties 1. The quality or condition of being infinite. 2. Unbounded space, time, or quantity. 3. An indefinitely large number or amount. 4. Mathematics The limit that a function is said to approach at x = a when (x) is larger than any preassigned number for all x sufficiently near a. 5. a. A range in relation to an optical system, such as a camera lens, representing distances great enough that light rays reflected from objects within the range may be regarded as parallel. b. A distance setting, as on a camera, beyond which the entire field is in focus. |
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