| 单词 | sidereal |
|---|---|
| 音标 | [sai'diəriəl] |
| 解释 | a.恒星的 |
| 红宝书 | 【英】 adj.恒星的 (of stars or constellations；ast ral) 【考】 arboreal : trees / sidereal : stars(树木的和树木/恒星 的和恒星) 【记】 sider(星)＋eal→星 的，分割记忆：side ＋real |
| 字源 | sidereal (adj.) also siderial, 1630s, "star-like;" 1640s, "of or pertaining to the stars," earlier sideral (1590s), from French sidereal (16c.), from Latin sidereus "starry, astral, of the constellations," from sidus (genitive sideris) "star, group of stars, constellation," probably from PIE root *sweid- "to shine" (cognates: Lithuanian svidus "shining, bright"). Sidereal time is measured by the apparent diurnal motion of the fixed stars. The sidereal day begins and ends with the passage of the vernal equinox over the meridian and is about four minutes shorter than the solar day, measured by the passage of the sun over the meridian. |
| 不择手段背单词 | adj. 恒星的 = stellar = astral 【记】side, real旁边是真的: 当你眼冒金星是金星是假的旁边的东西是真的. 【类】arboreal: trees = sidereal: stars = fluvial: river = affective: emotion树木的对树木 = 恒星的对恒星 = 河流的对河流 = 感情的对感情 |
| 趣味全助记 | 【记】源自star，i不发音，er=ar 就是star |
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