名词
中文翻译：根袋
同义词：
['root cavity', 'root canal', 'root chamber例句：1. The roots of the tree were exposed in the storm.（暴风雨中，树的根部暴露了。）']
例句：
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1. The roots of the tree were exposed in the storm.
暴风雨中，树的根部暴露了。
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2.The dentist had to remove the infected root pocket.
牙医不得不移除感染的根囊。
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3. The roots of the plant are essential for its survival.
植物的根对于其生存至关重要。