名词
中文翻译：马背静脉
同义词：
["horse's veins", "horse's arteries", "horse's trunk"]
例句：
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1. The horse's caval veins are a vital part of its circulation system.
马的马背静脉是其循环系统的重要组成部分。
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2.The veterinarian examined the horse's caval veins and found no signs of infection.
兽医检查了马的马背静脉，没有发现感染的迹象。
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3. The horse's caval veins were severely damaged during the race.
赛跑中，马的马背静脉严重受损。