| 释义 |
ret·ro·grade AHD[rĕtʹrə-grād'] D.J.[ˈretrəˌgreɪd]K.K.[ˈrɛtrəˌgred]adj.（形容词）- Moving or tending backward.后退的：向后移动的或向后倾的
- Opposite to the usual order; inverted or reversed.颠倒的：与通常顺序相对的；倒转的或颠倒的
- Reverting to an earlier or inferior condition.退化的：回到较早或较低级的状态的
- Astronomy 【天文学】
- Of or relating to the orbital revolution or axial rotation of a planetary or other celestial body that moves clockwise from east to west, in the direction opposite to most celestial bodies.逆行的：行星或其它天体沿轨道旋转或绕轴旋转的，该天体顺着与大多数天体相反的方向由东向西顺时针运动
- Of or relating to the brief, regularly occurring, apparently backward movement of a planetary body in its orbit as viewed against the fixed stars, caused by the differing orbital velocities of Earth and the body observed.后退的：行星所做的短暂有规律的运动的，以静止星体为参照物进行观察时，这种运动显然是后退的，这是由地球和所观察天体具有不同的轨道速度引起的
- Archaic Opposed; contrary.【古语】 对立的：相对的；相反的
v.intr.（不及物动词）ret.ro.grad.ed, ret.ro.grad.ing, ret.ro.grades - To move or seem to move backward.See Synonyms at recede 后退，逆行：向后移动或似乎向后移动 参见 recede
- To decline to an inferior state; degenerate.退步：降至较低级的状态；退化
- Middle English 中古英语
- from Latin retrōgradus 源自 拉丁语 retrōgradus
- from retrōgradī [to go back] 源自 retrōgradī [回去]
- retrō- [retro-] retrō- [表“后退的”]
- -gradus [walking] from gradī [to go] * see ghredh- -gradus [步行] 源自 gradī [去] * 参见 ghredh-
ret'rogradaʹtion AHD[-rō-grā-dāʹshən] （名词）retʹrograde'ly adv.（副词） |