名词
中文翻译：口
同义词：
['mouth', "aperture例句：1. The surgeon carefully opened the ostium to examine the patient's condition.（外科医生小心翼翼地打开口部来检查病人的状况。）2. The scientist discovered an ostium that led to a hidden underground cavern.（科学家发现了一个通向地下洞穴的开口。）3. The ostium of the river is lined with lush greenery and serves as a natural barrier.（河流的开口被郁郁葱葱的植被所环绕，起到了天然屏障的作用。）"]
例句：
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1. The surgeon carefully opened the ostium to examine the patient's condition.
外科医生小心翼翼地打开口部来检查病人的状况。
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2. The scientist discovered an ostium that led to a hidden underground cavern.
科学家发现了一个通向地下洞穴的开口。
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3. The ostium of the river is lined with lush greenery and serves as a natural barrier.
河流的开口被郁郁葱葱的植被所环绕，起到了天然屏障的作用。