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be + retrograde
形容词用法，意为“倒退的、退步的”，常作表语，用于正式语境。注意与动词用法区分。
Critics argue that the new policy is retrograde and harmful.
批评者认为新政策是倒退的，而且有害。
（天体）逆行
retrogrades — third person singular of retrograde
先理解核心含义，再看它在真实句子里的用法。
（天体）逆行
to move backward in an orbit, said of a celestial body
Critics argue that the new policy is retrograde and harmful.
批评者认为新政策是倒退的，而且有害。
此义主要用于天文学，指行星等在轨道上向后移动。
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.
(天体)在轨道上向后移动
move backward in an orbit, of celestial bodies
使退变质
To change (minerals, rocks, etc.) metamorphically through a decrease in pressure or temperature.
朝着与通常方向相反的方向移动
move in a direction contrary to the usual one
retrograde
Base
原形
retrogrades
3rd person
第三人称单数
retrograding
-ing
现在分词
retrograded
Past
过去式
retrograded
Past participle
过去分词
The planet retrogrades across the sky.
这颗行星在天空中逆行。
The comet retrograded last month.
这颗彗星上个月逆行。
The spacecraft is retrograding right now.
这艘航天器正在倒退。
retrograde 作动词为规则变化；常表示“后退、退步”，天文学中指天体逆行。
Every two years, Mars appears to retrograde for several weeks.
每两年，火星似乎逆行几周。
AI contextual example
The telescope showed the asteroid retrograding against the background stars.
望远镜显示这颗小行星在背景恒星间逆行。
AI contextual example
Some moons in the outer solar system retrograde around their planets.
太阳系外缘的一些卫星绕其行星逆行。
AI contextual example
retrograding planets
逆行的行星
WordNet
形容词用法，意为“倒退的、退步的”，常作表语，用于正式语境。注意与动词用法区分。
Critics argue that the new policy is retrograde and harmful.
批评者认为新政策是倒退的，而且有害。
不及物动词用法，尤指天体沿轨道向后移动，后面不接宾语。
Mercury retrogrades several times a year.
水星一年中逆行好几次。
Not this
The lecture gave a retrograde of the main theories.
Use this
The lecture gave a review of the main theories.
“retrograde”的中文释义“回顾”容易误导学习者，但英语中它表示“向后退”，并无“复习、回顾”之意。表示“对内容的复习/回顾”应用“review”。
Not this
Neptune retrogrades its orbit every year.
Use this
Neptune retrogrades every year.
“retrograde”作动词时是不及物动词，意为“（天体）逆行”，不能接宾语。原句误加了“its orbit”作宾语，应去掉以符合其用法。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
逆行运动
The retrograde motion of Mars can be observed from Earth.
火星的逆行运动可以从地球上观察到。
逆行轨道
The comet follows a retrograde orbit around the Sun.
这颗彗星沿逆行轨道绕太阳运行。
逆行自转
Venus is known for its slow retrograde rotation.
金星以其缓慢的逆行自转而闻名。
开始逆行
Mercury will go retrograde three times next year.
水星明年将三次开始逆行。
水星逆行（常用来形容诸事不顺、运气不佳）
My phone died right before the interview—Mercury must be in retrograde.
面试前手机突然没电了——一定是水星在逆行。
倒退的一步；退步
The new law is seen as a retrograde step for civil rights.
新法律被视为公民权利上倒退的一步。
在倒退；退步中
After two years of progress, the project seems to be in retrograde.
经过两年的进展后，这个项目似乎正在倒退。
Use retrogrades naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记 retro 有“回”的感觉，天体在轨道上“倒退”就是 retrograde，像行星走着走着往回退。
语域：formal 常见场景：astronomy、astrology、scientific writing 此处指动词义“（天体）逆行”，多用于天文学或占星术等书面语境，属于比较正式的专业用语；日常口语中较少使用。
真正与 retrograde 押韵的常用词有 grade、degrade、upgrade、centigrade（结尾均为 -grade /ɡreɪd/），parade、invade（结尾为 -ade /eɪd/）也押韵。注意形近词如 retrospect /ˈrɛtrəˌspɛkt/、retroactive /ˌrɛtroʊˈæktɪv/ 虽以 retro- 开头，但与 -grade 不押韵，不能按拼写类推读音。
Dictionary facts from ECDICT, WIKTIONARY.