名词
中文翻译：牙龈
同义词：
['gummor', 'gums', 'gums']
例句：
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1.He had a cavity in his gums and needed to get it filled.
他的牙龈有洞，需要补牙。
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2.The dentist advised him to brush his gums twice a day.
牙医建议他每天刷牙两次。
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3.Gums are the soft tissue that covers the teeth and helps them fit together.
牙龈是覆盖牙齿并帮助它们相互配合的软组织。