名词
中文翻译：笼子环
同义词：
['cage', 'cage ring', 'cage ringing']
例句：
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1.The bird was caught in the cage ring and could not fly out.
那只鸟被关在笼子里，无法飞出来。
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2.The old man had a cage ring made for his pet parrot.
那位老人为他的爱宠鹦鹉做了一个笼子环。
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3. The cage ring was used to keep the animals confined within their enclosures.
笼子环被用来将动物限制在其围栏内。