cislunarWiktionary 原文构词拆分cis-前缀(geography) On this side of. · (physical chemistry) Forms names of chemical compounds in which two atoms or groups are situated on the same side of some plane of symmetry passing through the compound.+lunar词根/词干词源说明From cis- + lunar.释义（英文）形容词 AdjectiveSituated between the Earth and the Moon.Situated below the orbit of the Moon, or equivalent distance from the Earth.