| 单词 | horizon |
| 释义 | horizon n. 1. a the line at which the earth and sky appear to meet. b (in full apparent or sensible or visible horizon) the line at which the earth and sky would appear to meet but for irregularities and obstructions; a circle where the earth's surface touches a cone whose vertex is at the observer's eye. c (in full celestial or rational or true horizon) a great circle of the celestial sphere, the plane of which passes through the centre of the earth and is parallel to that of the apparent horizon of a place. 2. limit of mental perception, experience, interest, etc. 3. a geological stratum or set of strata, or layer of soil, with particular characteristics. 4. Archaeol. the level at which a particular set of remains is found. Phrases and idioms on the horizon (of an event) just imminent or becoming apparent. Etymology: ME f. OF orizon(te) f. LL horizon -ontis f. Gk horizon (kuklos) limiting (circle) |
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