形容词
中文翻译：环形的
同义词：
['circular', 'round']
例句：
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1.The annular ring is the part of a wheel that is not in contact with the ground.
环形圈是轮子与地面不接触的部分。
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2. Annular rings are often used to protect delicate objects from damage.
环形圈通常用于保护易损物品免受损坏。
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3. The annular gap between the two plates allows for easy rotation of the assembly.
两个板之间的环形间隙使得组件的旋转变得容易。