名词
中文翻译：环形的
同义词：
['annular ring', 'annular sphere', 'annular ring structure']
例句：
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1. The planetary system is made up of several rings of moons.
行星系统由几颗月球环组成。
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2.The satellite orbited around the earth in an annular path.
卫星绕地球以环形路径运行。
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3. The construction was designed with an annular opening for easy access.
该建筑设计了环形开口以便方便进出。