veins

简明释义

英[veɪns]美[veɪnz]

n. [解剖]静脉（vein 的复数）；[木]纹理

v. 使有脉络；使成脉络状（vein 的三单形式）

英英释义

单词用法

同义词

反义词

例句

1.All night long you must sing to me, and my thorn must pierce your heart, and your life-blood must flow into my veins, and become mine.

你必须整夜对我歌唱，我的刺必须刺穿你的心，你的生命之血必须流进我的血管，成为我的血液。

2.That, in turn, means lots of big veins.

反过来，这就意味着需要许多大型叶脉。

3.And veins are the basis of it all.

而一切基于叶脉。

4.He shouted at his brother, his neck veins bulging.

他冲着弟弟大喊大叫，脖子上的血管都凸起来了。

5.It works only in the veins, where the blood flow is slower.

它只在血液流动较缓的静脉中起作用。

6.The esophagus also lies in front of parts of the hemiazygos veins.

食道也位于半奇静脉的前面。

7.Varicose veins can be both painful and unsightly.

静脉曲张的静脉既会疼痛又会影响美观。

8.She felt a rush of adrenaline as the blood pumped through her veins during the race.

在比赛中，当血液在她的静脉中涌动时，她感到一阵肾上腺素的冲击。

9.The doctor examined the patient's veins to check for any signs of disease.

医生检查了病人的静脉以寻找任何疾病的迹象。

10.He noticed blue lines on his arms, indicating prominent veins.

他注意到手臂上有蓝色的线条，表明静脉突出。

11.The nurse inserted the needle into the patient's veins to draw blood.

护士将针头插入病人的静脉中抽取血液。

作文

The human body is a remarkable system composed of various organs and structures that work together to maintain life. Among these structures, the circulatory system plays a vital role in transporting blood throughout the body. One of the key components of this system is the network of veins, which are responsible for carrying deoxygenated blood back to the heart. Understanding the function and significance of veins can provide insight into how our bodies operate and the importance of maintaining cardiovascular health.Veins are blood vessels that return blood from various parts of the body to the heart. Unlike arteries, which carry oxygen-rich blood away from the heart, veins transport blood that is low in oxygen and high in carbon dioxide. This process is crucial because it allows our bodies to remove waste products and maintain a stable internal environment.The structure of veins is specifically designed to facilitate their function. They have thinner walls compared to arteries, which makes them more flexible and able to accommodate varying volumes of blood. Additionally, veins contain valves that prevent the backflow of blood, ensuring that it moves in one direction towards the heart. This is particularly important in the extremities, where blood must travel against gravity to return to the heart.There are several types of veins in the human body, including superficial and deep veins. Superficial veins are located close to the surface of the skin and are often visible. They play a role in regulating body temperature by allowing excess heat to dissipate through the skin. Deep veins, on the other hand, are located deeper within the muscles and are responsible for transporting the majority of blood back to the heart. The interplay between these two types of veins is essential for maintaining proper circulation and overall health.Maintaining healthy veins is crucial for preventing various medical conditions. Poor circulation can lead to issues such as varicose veins, which occur when the valves in the veins become weakened or damaged. This can result in swelling, pain, and discomfort in the affected areas. Other conditions related to veins include deep vein thrombosis (DVT), a serious condition where blood clots form in the deep veins, potentially leading to life-threatening complications.To promote healthy veins, individuals should engage in regular physical activity, maintain a healthy weight, and avoid prolonged periods of inactivity. Simple exercises, such as walking or leg lifts, can help improve circulation and strengthen the veins. Additionally, staying hydrated and consuming a balanced diet rich in fruits, vegetables, and whole grains can support vascular health.In conclusion, veins are an essential component of the circulatory system, playing a critical role in returning deoxygenated blood to the heart. Their unique structure and function highlight the complexity of the human body and the importance of maintaining cardiovascular health. By understanding the role of veins and taking steps to care for them, we can contribute to our overall well-being and longevity.

人体是一个由各种器官和结构组成的卓越系统，这些器官和结构共同工作以维持生命。在这些结构中，循环系统在全身运输血液方面发挥着至关重要的作用。其中一个关键组成部分是网络的静脉，它负责将缺氧血液送回心脏。理解静脉的功能和重要性可以让我们深入了解身体的运作方式以及维护心血管健康的重要性。静脉是将血液从身体各个部位返回心脏的血管。与动脉不同，动脉将富含氧气的血液从心脏输送出去，而静脉则运输缺氧且富含二氧化碳的血液。这个过程至关重要，因为它允许我们的身体去除废物并维持稳定的内部环境。静脉的结构专门设计以促进其功能。与动脉相比，它们的壁较薄，使其更加灵活，能够适应不同体积的血液。此外，静脉内含有阀门，防止血液回流，确保血液朝着一个方向流向心脏。这在四肢中尤为重要，因为血液必须逆着重力流动才能返回心脏。人体内有几种类型的静脉，包括表浅静脉和深层静脉。表浅静脉位于皮肤表面附近，通常是可见的。它们通过允许多余的热量通过皮肤散发来调节体温。另一方面，深层静脉位于肌肉深处，负责将大部分血液运输回心脏。这两种类型的静脉之间的相互作用对于维持适当的循环和整体健康至关重要。维持健康的静脉对于预防各种医学疾病至关重要。循环不良可能导致静脉曲张等问题，当静脉内的阀门变弱或受损时，就会发生这种情况。这可能导致受影响区域的肿胀、疼痛和不适。与静脉相关的其他疾病包括深静脉血栓（DVT），这是一种严重的疾病，血块在深层静脉中形成，可能导致危及生命的并发症。为了促进健康的静脉，个人应进行定期的体育活动，保持健康的体重，并避免长时间的不活动。简单的锻炼，如散步或抬腿，可以帮助改善血液循环并增强静脉。此外，保持水分充足和摄入富含水果、蔬菜和全谷物的均衡饮食可以支持血管健康。总之，静脉是循环系统的重要组成部分，在将缺氧血液送回心脏方面发挥着至关重要的作用。它们独特的结构和功能突显了人体的复杂性以及维护心血管健康的重要性。通过了解静脉的作用并采取措施来保护它们，我们可以为我们的整体健康和长寿做出贡献。