ultraviolet radiation

简明释义

紫外辐射

英英释义

例句

1.Excessive exposure to ultraviolet radiation can lead to skin cancer.

过度暴露在紫外线辐射下可能导致皮肤癌。

2.Many tanning beds emit ultraviolet radiation, which can be harmful.

许多日光浴床会释放紫外线辐射，这可能是有害的。

3.The sunscreen protects your skin from ultraviolet radiation.

防晒霜可以保护你的皮肤免受紫外线辐射。

4.Wearing sunglasses helps shield your eyes from ultraviolet radiation.

戴太阳镜有助于保护你的眼睛免受紫外线辐射。

5.The ozone layer absorbs most of the ultraviolet radiation from the sun.

臭氧层吸收了大部分来自太阳的紫外线辐射。

作文

Ultraviolet radiation, or 紫外线辐射, is a form of electromagnetic radiation that comes from the sun and man-made sources. It is invisible to the naked eye but plays a significant role in our daily lives. Understanding 紫外线辐射 is essential for both health and environmental reasons. Firstly, 紫外线辐射 can be divided into three types: UVA, UVB, and UVC. UVA rays penetrate the skin more deeply and are primarily responsible for premature skin aging and some skin cancers. UVB rays, on the other hand, are responsible for sunburn and have a more direct role in developing skin cancer. UVC rays are the most harmful but are mostly absorbed by the Earth’s atmosphere and do not reach the surface. The benefits of 紫外线辐射 cannot be overlooked. One of the most significant advantages is its role in the production of vitamin D in the human body. When our skin is exposed to sunlight, specifically to UVB rays, it generates vitamin D, which is crucial for maintaining healthy bones and immune function. However, this benefit must be balanced with the risks associated with excessive exposure to 紫外线辐射. Overexposure to 紫外线辐射 can lead to various health issues, including skin cancer, cataracts, and weakened immune response. The World Health Organization (WHO) has reported that skin cancer rates have been increasing globally, and much of this can be attributed to increased exposure to 紫外线辐射. Therefore, it is essential to take protective measures when spending time outdoors. To protect ourselves from the harmful effects of 紫外线辐射, we should wear sunscreen with a high SPF, seek shade during peak sunlight hours, and wear protective clothing such as hats and sunglasses. These simple steps can significantly reduce our risk of skin damage and long-term health issues. In addition to personal protection, understanding 紫外线辐射 is also vital for environmental reasons. Increased levels of 紫外线辐射 due to ozone layer depletion can harm ecosystems, particularly aquatic life. Many marine organisms, including phytoplankton, are sensitive to 紫外线辐射, and changes in their populations can affect the entire food chain. Protecting our environment from pollutants that damage the ozone layer is crucial for maintaining the balance of our ecosystems. In conclusion, 紫外线辐射 is a double-edged sword; it offers benefits such as vitamin D production but also poses significant health risks. By understanding the nature of 紫外线辐射 and taking appropriate precautions, we can enjoy the sun safely while minimizing its adverse effects. Education and awareness about 紫外线辐射 are key to ensuring a healthier future for ourselves and the planet. Therefore, it is imperative that we continue to educate ourselves and others about the importance of protecting ourselves from 紫外线辐射 while also advocating for the health of our environment.

紫外线辐射是一种来自太阳和人造源的电磁辐射形式。它对肉眼不可见，但在我们的日常生活中扮演着重要角色。理解紫外线辐射对于健康和环境原因至关重要。首先，紫外线辐射可以分为三种类型：UVA、UVB和UVC。UVA射线能更深地穿透皮肤，主要负责皮肤的早衰和某些皮肤癌。另一方面，UVB射线则负责晒伤，并在发展皮肤癌方面起着更直接的作用。UVC射线是最有害的，但大部分被地球的大气层吸收，不会到达地表。紫外线辐射的好处不容忽视。其中一个最重要的优势是它在人体内维生素D的产生中发挥的作用。当我们的皮肤暴露在阳光下，特别是UVB射线时，它会生成维生素D，这对维持健康的骨骼和免疫功能至关重要。然而，这种好处必须与过度暴露于紫外线辐射的风险相平衡。过度暴露于紫外线辐射可能导致各种健康问题，包括皮肤癌、白内障和免疫反应减弱。世界卫生组织（WHO）报告称，全球皮肤癌发病率正在上升，其中很大一部分可以归因于对紫外线辐射的增加暴露。因此，在户外活动时采取保护措施至关重要。为了保护自己免受紫外线辐射的有害影响，我们应使用高SPF的防晒霜，在阳光最强烈的时段寻求阴凉，并穿戴保护性衣物，如帽子和太阳镜。这些简单的步骤可以显著降低我们皮肤受损和长期健康问题的风险。除了个人保护，理解紫外线辐射对于环境原因也至关重要。由于臭氧层破坏而导致的紫外线辐射水平增加可能会危害生态系统，特别是水生生物。许多海洋生物，包括浮游植物，对紫外线辐射非常敏感，它们种群的变化会影响整个食物链。保护我们的环境免受破坏臭氧层的污染物影响，对于维持生态系统的平衡至关重要。总之，紫外线辐射是一把双刃剑；它提供了如维生素D生产等好处，但也带来了显著的健康风险。通过理解紫外线辐射的性质并采取适当的预防措施，我们可以安全地享受阳光，同时尽量减少其不利影响。关于紫外线辐射的教育和意识是确保我们和地球未来更健康的关键。因此，我们必须继续教育自己和他人，了解保护自己免受紫外线辐射的重要性，同时倡导保护我们环境的健康。