名词
中文翻译：心包膜
同义词：
['pericardium', 'pericardy']
例句：
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1.The heart's pericardial sac is where the heart sits inside the chest cavity.
心脏的心肌位于胸腔内。
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2. The pericardial fluid helps to cushion the heart during its movement.
心包液有助于缓冲心脏的运动。
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3. The pericardial effusion can cause chest pain and shortness of breath.
心包积液可能导致胸痛和呼吸困难。