retrograding

核心释义

此义主要用于天文学，指行星等在轨道上向后移动。

to move backward in an orbit, said of a celestial body

1. 1.

   使后退；使溯源侵蚀

   To cause (a land feature such as a coastline or waterfall) to undergo retrogradation, that is, to travel in the direction of the land or upstream due to erosion.

2. 2.

   (天体)在轨道上向后移动

   move backward in an orbit, of celestial bodies

3. 3.

   使退变质

   To change (minerals, rocks, etc.) metamorphically through a decrease in pressure or temperature.

4. 4.

   朝着与通常方向相反的方向移动

   move in a direction contrary to the usual one

5. 5.

   倒退；退步

   To revert to an inferior or less developed state; to decline, to regress.

6. 6.

   后退；返回

   move back

7. 7.

   逆行

   Of a celestial body, especially a planet: to show retrogradation; to seem to move across the sky in the opposite direction from its ordinary movement.

8. 8.

   溯源侵蚀；后退

   Of a land feature: to travel in the direction of the land or upstream due to erosion.

9. 9.

   撤退；后退

   To retreat or withdraw from a position.

使后退；使溯源侵蚀；(天体)在轨道上向后移动；使退变质；朝着与通常方向相反的方向移动；倒退；退步