名词
中文翻译：珍珠腺
同义词：
['pearl sac', 'pearl apparatus', 'pearl organ']
例句：
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1.The pearl gland is responsible for producing the lubricating fluid that keeps the joints in the eye healthy.
珍珠腺负责产生润滑液，保持眼睛的关节健康。
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2. The pearl gland is a small, round structure located near the eyelid.
珍珠腺是一种小而圆的结构，位于眼睑附近。
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3. The pearl gland is an important part of the immune system, secreting antibodies to fight off infections.
珍珠腺是免疫系统的一个重要部分，分泌抗体来抵抗感染。