名词
中文翻译：心脏开口
同义词：
['atrial ostium', 'cardiac orifice']
例句：
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1. The surgeon performed a heartsurgery to repair the cardiac ostium.
外科医生进行了一次心脏手术来修复心脏开口。
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2. The patient was admitted to thehospital with a cardiac ostium problem.
病人因心脏开口问题被送进了医院。
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3. The researcher discovered that the cardiacostium plays a crucial role inblood circulation.
研究者发现心脏开口在血液循环中起着至关重要的作用。