1
in a celestial orbit
表示状态或位置，常用介词 in。
The satellite is in a celestial orbit around Earth.
这颗卫星处于围绕地球的天体轨道上。
天体轨道
先理解核心含义，再看它在真实句子里的用法。
天体轨道
the path of a celestial object as it revolves around another object in space
The satellite is in a celestial orbit around Earth.
这颗卫星处于围绕地球的天体轨道上。
指天体围绕另一天体运行的路径
相关中文义项：天体轨道
the (usually elliptical) path described by one celestial body in its revolution about another
The satellite is in a stable celestial orbit around Earth.
这颗卫星处于绕地球稳定的天体轨道上。
Astronomers calculate the celestial orbit of a comet.
天文学家计算彗星的天体轨道。
The spacecraft entered a celestial orbit after launch.
航天器发射后进入了一条天体轨道。
表示状态或位置，常用介词 in。
The satellite is in a celestial orbit around Earth.
这颗卫星处于围绕地球的天体轨道上。
表示所属关系，后接天体名称。
The celestial orbit of the moon is nearly circular.
月球的天体轨道近乎圆形。
表示进入轨道的行为。
The spacecraft successfully entered a celestial orbit.
航天器成功进入了一条天体轨道。
Not this
The satellite moves celestial orbit.
Use this
The satellite moves in a celestial orbit.
中文学习者常遗漏介词'in'，表达“在轨道上”时，需要介词'in'引出轨道，且常需不定冠词'a'表示泛指。
Not this
Celestial orbit is elliptical.
Use this
The celestial orbit is elliptical.
在英语中，可数名词短语作主语时通常需要冠词，这里应加定冠词'the'特指某个天体轨道。
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天体轨道，通常与介词in或on搭配
Dictionary facts from ECDICT, WORDNET.