ultraviolet

简明释义

英[ˌʌltrəˈvaɪələt]美[ˌʌltrəˈvaɪələt]

adj. 紫外的，紫外线的；（设备，技术）产生紫外线的

n. 紫外光，紫外辐射

英英释义

单词用法

同义词

反义词

例句

1.At the German Physical Society, Max Planck presented a resolution to the Ultraviolet Catastrophe.

马克斯·普朗克向德国物理学会提交了针对紫外灾难的解决方案。

2.Many types of radiation, especially ultraviolet rays from the Sun, can damage skin cells and cause cancer.

许多类型的辐射都会损害皮肤细胞并导致癌症，尤其是来自太阳紫外线的辐射。

3.After three months, the women's skin was moister, smoother, and less scaly and red when exposed to ultraviolet light.

三个月后，妇女的皮肤更加湿润光滑，暴露在紫外线时减少鳞片和泛红。

4.Increased exposure to ultraviolet light is a risk factor.

过多地暴露于紫外线是一个危险因素。

5.Some systems use ultraviolet light to destroy harmful organisms.

某些系统使用紫外线光照来杀灭有害有机物。

6.The ozone layer protects life on Earth from harmful ultraviolet rays.

臭氧层可以保护地球上的生物免受有害紫外线的辐射。

7.The ultraviolet that exists in sunshine can also be used this way.

阳光中的紫外线也可以这样利用。

8.Certain types of sterilization equipment use ultraviolet 紫外线 light to kill bacteria.

某些类型的消毒设备使用ultraviolet紫外线光来杀死细菌。

9.Sunscreens are designed to protect your skin from ultraviolet 紫外线 rays.

防晒霜旨在保护你的皮肤免受ultraviolet紫外线光线的伤害。

10.Research shows that ultraviolet 紫外线 exposure can lead to eye problems like cataracts.

研究表明，暴露于ultraviolet紫外线下可能导致白内障等眼部问题。

11.Some fluorescent lights emit ultraviolet 紫外线 light, which can be harmful in high doses.

一些荧光灯发出ultraviolet紫外线光，在高剂量下可能有害。

12.The sun emits a significant amount of ultraviolet 紫外线 radiation, which can cause skin damage.

太阳发出大量的ultraviolet紫外线辐射，这可能会导致皮肤损伤。

作文

Ultraviolet (紫外线) radiation is a type of electromagnetic radiation that falls between visible light and X-rays in the electromagnetic spectrum. It is invisible to the human eye, yet it plays a significant role in our daily lives. The sun is the primary source of ultraviolet (紫外线) rays, which can have both beneficial and harmful effects on our health and environment.One of the most well-known benefits of ultraviolet (紫外线) radiation is its ability to stimulate the production of vitamin D in our bodies. When our skin is exposed to ultraviolet (紫外线) rays, it converts a cholesterol derivative into vitamin D, which is essential for maintaining healthy bones and immune function. This natural process is crucial for people living in areas with limited sunlight, especially during winter months when ultraviolet (紫外线) exposure is minimal.However, despite its benefits, excessive exposure to ultraviolet (紫外线) radiation can lead to serious health issues. One of the most common problems associated with overexposure is skin cancer, which is primarily caused by prolonged exposure to ultraviolet (紫外线) rays. There are two main types of skin cancer linked to ultraviolet (紫外线) exposure: melanoma and non-melanoma. Melanoma is the more aggressive form and can be life-threatening if not detected early. Non-melanoma skin cancers, while generally less severe, can still cause significant damage and require medical treatment.In addition to skin cancer, ultraviolet (紫外线) radiation can also cause premature aging of the skin, leading to wrinkles, sunspots, and a loss of elasticity. Furthermore, ultraviolet (紫外线) rays can harm our eyes, increasing the risk of cataracts and other eye diseases. Therefore, it is crucial to protect ourselves from excessive ultraviolet (紫外线) exposure by using sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours.The environmental impact of ultraviolet (紫外线) radiation is also noteworthy. High levels of ultraviolet (紫外线) exposure can disrupt ecosystems, particularly in aquatic environments. For example, phytoplankton, which forms the base of the marine food web, is sensitive to ultraviolet (紫外线) radiation. Increased ultraviolet (紫外线) levels can reduce phytoplankton populations, leading to a cascading effect on marine life and biodiversity.To combat the harmful effects of ultraviolet (紫外线) radiation, scientists and researchers are continuously studying ways to monitor and mitigate its impact. Public awareness campaigns about the dangers of ultraviolet (紫外线) exposure and the importance of sun protection are essential in educating individuals about how to enjoy the sun safely. Additionally, advancements in technology have led to the development of products that can help block or absorb ultraviolet (紫外线) rays, providing further protection for our skin and eyes.In conclusion, ultraviolet (紫外线) radiation is a powerful force that affects both our health and the environment. While it is vital for the production of vitamin D and has various applications in science and medicine, we must remain vigilant about its potential dangers. By understanding the benefits and risks associated with ultraviolet (紫外线) exposure, we can take proactive measures to protect ourselves and preserve the delicate balance of our ecosystems.

紫外线辐射是一种电磁辐射，位于可见光和X射线之间。它对人眼是不可见的，但在我们的日常生活中扮演着重要角色。太阳是紫外线的主要来源，这些紫外线对我们的健康和环境都有益处和危害。紫外线辐射最著名的好处之一是它能够刺激我们体内维生素D的产生。当我们的皮肤暴露在紫外线下时，它会将胆固醇衍生物转化为维生素D，这对保持健康的骨骼和免疫功能至关重要。这一自然过程对生活在阳光有限地区的人们尤其重要，特别是在冬季，紫外线的暴露很少。然而，尽管有其好处，过度暴露于紫外线辐射也可能导致严重的健康问题。与过度暴露相关的最常见问题之一是皮肤癌，主要是由于长时间暴露在紫外线下引起的。与紫外线暴露有关的皮肤癌主要有两种类型：黑色素瘤和非黑色素瘤。黑色素瘤是更具侵袭性的形式，如果未能及早发现，可能会危及生命。非黑色素瘤皮肤癌虽然通常不那么严重，但仍可能造成重大损害并需要医疗治疗。除了皮肤癌，紫外线辐射还可以导致皮肤的过早衰老，导致皱纹、晒斑和弹性丧失。此外，紫外线还可能伤害我们的眼睛，增加白内障和其他眼病的风险。因此，保护自己免受过度紫外线暴露的影响至关重要，方法包括使用防晒霜、穿着保护性服装以及在阳光强烈时寻求阴凉处。紫外线辐射对环境的影响同样值得注意。高水平的紫外线暴露会破坏生态系统，特别是在水生环境中。例如，浮游植物作为海洋食物链的基础，对紫外线辐射很敏感。紫外线水平的增加可能会减少浮游植物的数量，从而对海洋生物和生物多样性产生连锁反应。为了应对紫外线辐射的有害影响，科学家和研究人员不断研究监测和减轻其影响的方法。关于紫外线暴露危险和防晒重要性的公众意识活动对于教育个人安全享受阳光至关重要。此外，技术的进步使得开发出可以帮助阻挡或吸收紫外线的产品成为可能，为我们的皮肤和眼睛提供进一步的保护。总之，紫外线辐射是一种强大的力量，影响着我们的健康和环境。虽然它对维生素D的生产至关重要，并在科学和医学中有各种应用，但我们必须对其潜在危险保持警惕。通过了解与紫外线暴露相关的好处和风险，我们可以采取积极措施来保护自己并维护生态系统的微妙平衡。