ultraviolet ray

简明释义

紫外线

英英释义

例句

1.Certain types of lamps emit ultraviolet ray 紫外线 for sterilization purposes.

某些类型的灯发出ultraviolet ray 紫外线用于消毒。

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

太阳发出大量的ultraviolet ray 紫外线，这可能会导致皮肤损伤。

3.Excessive exposure to ultraviolet ray 紫外线 can lead to cataracts.

过度暴露于ultraviolet ray 紫外线可能导致白内障。

4.Some plants require ultraviolet ray 紫外线 for their growth and development.

一些植物需要ultraviolet ray 紫外线来生长和发育。

5.Sunscreen helps to protect your skin from harmful ultraviolet ray 紫外线 exposure.

防晒霜有助于保护您的皮肤免受有害的ultraviolet ray 紫外线暴露。

作文

The sun is a powerful source of energy, providing light and warmth to our planet. However, it also emits various types of radiation, one of which is the ultraviolet ray (紫外线). These rays are not visible to the human eye, but they have significant effects on both the environment and human health. Understanding ultraviolet rays is essential for protecting ourselves from their harmful effects while also appreciating their benefits.Ultraviolet rays are classified into three categories based on their wavelength: UVA, UVB, and UVC. UVA rays have the longest wavelength and can penetrate the skin more deeply, leading to premature aging and wrinkles. UVB rays, on the other hand, are responsible for causing sunburn and can contribute to skin cancer. UVC rays have the shortest wavelength and are mostly absorbed by the Earth's atmosphere, making them less of a concern for our daily lives.Despite their potential dangers, ultraviolet rays play a crucial role in the production of vitamin D in our bodies. When our skin is exposed to sunlight, specifically to UVB rays, it synthesizes vitamin D, which is vital for maintaining healthy bones and a robust immune system. This is why moderate sun exposure is often recommended, as it provides essential nutrients without excessive risk.However, with the increasing awareness of the harmful effects of ultraviolet rays, many people have started to take precautionary measures. The rise in skin cancer cases has prompted public health campaigns to educate individuals about the importance of sun protection. Wearing sunscreen with a high SPF, donning protective clothing, and seeking shade during peak sun hours are all effective strategies to minimize exposure to ultraviolet rays.Moreover, the impact of ultraviolet rays is not limited to humans; it also affects the environment. For instance, increased levels of UV radiation can harm aquatic ecosystems, affecting phytoplankton and disrupting the food chain. Additionally, it can damage crops and reduce agricultural productivity, posing a threat to food security.In recent years, scientists have been studying the effects of ultraviolet rays in greater detail. Research has shown that prolonged exposure to these rays can lead to various health issues, including cataracts and other eye disorders. As a result, wearing sunglasses that block UV rays is highly recommended to protect our eyesight.In conclusion, while ultraviolet rays are an integral part of our natural environment and offer certain benefits, it is crucial to be aware of their potential risks. By understanding how ultraviolet rays work and taking appropriate precautions, we can enjoy the sun safely. Balancing sun exposure is key; we should embrace the sun's warmth while safeguarding our health and the environment against its harmful effects.

阳光是能量的重要来源，为我们的星球提供光和温暖。然而，它也发出各种类型的辐射，其中之一就是紫外线。这些射线对人眼不可见，但对环境和人类健康有重要影响。理解紫外线对于保护自己免受其有害影响，同时欣赏其益处至关重要。紫外线根据波长分为三类：UVA、UVB和UVC。UVA射线波长最长，可以更深地穿透皮肤，导致皮肤老化和皱纹。另一方面，UVB射线负责引起晒伤，并可能导致皮肤癌。UVC射线波长最短，主要被地球大气层吸收，因此对我们日常生活的影响较小。尽管存在潜在危险，紫外线在我们身体内维生素D的生产中发挥着关键作用。当我们的皮肤暴露在阳光下，特别是UVB射线时，它会合成维生素D，这对保持健康的骨骼和强大的免疫系统至关重要。这就是为什么适度的日晒通常被推荐，因为它提供了必要的营养而没有过多的风险。然而，随着人们对紫外线有害影响的认识不断提高，许多人开始采取预防措施。皮肤癌病例的增加促使公共卫生运动教育人们关于阳光保护的重要性。使用高SPF的防晒霜、穿戴保护性衣物以及在阳光最强烈的时段寻找阴凉处，都是有效减少暴露于紫外线的方法。此外，紫外线的影响不仅限于人类；它还会影响环境。例如，增加的UV辐射水平可能会损害水生生态系统，影响浮游植物并破坏食物链。此外，它还可能损害农作物，降低农业生产力，对粮食安全构成威胁。近年来，科学家们对紫外线的影响进行了更深入的研究。研究表明，长期暴露于这些射线可能导致各种健康问题，包括白内障和其他眼部疾病。因此，佩戴能够阻挡UV射线的太阳镜被高度推荐以保护我们的视力。总之，虽然紫外线是我们自然环境的重要组成部分，并提供某些益处，但意识到其潜在风险至关重要。通过了解紫外线的工作原理并采取适当的预防措施，我们可以安全地享受阳光。平衡日晒是关键；我们应当拥抱阳光的温暖，同时保护我们的健康和环境免受其有害影响。