名词
中文翻译：中空的静脉
同义词：
['mediastinum', 'venous sinus例句：1. The veins in the neck are often congested due to poor circulation.（颈部的静脉因血流不畅而常常淤血。）']
例句：
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1. The veins in the neck are often congested due to poor circulation.
颈部的静脉因血流不畅而常常淤血。
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2. During surgery, the surgeon must carefully map out the veins for proper anesthesia.
在手术中，外科医生必须仔细绘制静脉以便正确进行麻醉。
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3. The veins running through the heart are vital for blood circulation.
贯穿心脏的静脉对于血液流动至关重要。