单词：venous blood
venous blood的用法和样例：
例句
- Except in the pulmonary vein venous blood is rich in carbon dioxide and poor in oxygen.除了在肺静脉，静脉血中二氧化碳含量多而氧气含量少。
- Varicoceles is a condition like varicose veins where the blood vessels in the scrotum become tangled and swollen.精索静脉曲张就是阴囊的静脉血回流所经过的精索静脉变得扭曲和扩张。
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