melanin

简明释义

英[ˈmelənɪn]美[ˈmelənɪn]

n. 黑色素

n. （Melanin）人名；（俄）梅拉宁

英英释义

单词用法

同义词

反义词

例句

1.People with certain ancestries have the genetic coding to create a lot of melanin in their skin and therefore have dark skin.

某种确定血统的人皮肤中有可以产生很多黑素的基因序列，因此他们的皮肤是黑色的。

2.Melanin has an extremely important role- it absorbs UV light and dissipates the UV rays as heat.

黑素有着很重要的作用——它可以吸收紫外线，并可以像释放热量一样驱散紫外线。

3.The damaged skin, inhibit melanin regeneration, promote the microcirculation.

受损肌肤，抑制黑色素再生，促进微循环。

4.People with certain ancestries have the genetic coding to create a lot of melanin in their skin and therefore have dark skin.

某种确定血统的人皮肤中有可以产生很多黑素的基因序列，因此他们的皮肤是黑色的。

5.People with freckles have a normal number of melanocytes; their melanocytes just create clusters of melanin.

有雀斑的人呢，他们的黑色素细胞数量是正常的，只是他们的黑色素细胞产生了一些黑素。

6.As melanin encounters UV light, it turns brown.

黑色素遭遇到紫外光后变成褐色。

7.A temporary increase in melanin, the substance that colors hair eyes and skin, is the culprit.

黑色素暂时的增加是罪魁祸首，这种物质让头发、眼睛和皮肤带上色彩。

8.The costs of melanin-based plumage and iridescence are clearly different from this.

黑色素翅膀和彩虹色翅膀的代价与上面却完全不同。

9.The type and amount of melanin your body produces determines the color of your skin, hair and eyes.

你的身体产生的黑色素类型及数量决定你皮肤，头发和眼睛的颜色。

10.The amount of melanin in your skin determines your skin color.

你皮肤中的黑色素含量决定了你的肤色。

11.Freckles are small spots of concentrated melanin on the skin.

雀斑是皮肤上集中分布的黑色素小斑点。

12.Exposure to sunlight can increase the production of melanin in the skin.

阳光的照射可以增加皮肤中黑色素的产生。

13.People with more melanin tend to have darker hair.

拥有更多黑色素的人通常有更深色的头发。

14.Some skin conditions can affect melanin production, leading to lighter or darker patches.

一些皮肤病可能会影响黑色素的产生，导致肤色变浅或变暗。

作文

Melanin is a fascinating pigment that plays a crucial role in determining the color of our skin, hair, and eyes. It is produced by specialized cells known as melanocytes, which are primarily found in the skin, but also in other parts of the body such as the eyes and inner ear. The amount and type of melanin (黑色素) present in an individual is largely determined by genetics, but can also be influenced by environmental factors such as sun exposure.There are two main types of melanin (黑色素): eumelanin and pheomelanin. Eumelanin is responsible for black and brown shades, while pheomelanin contributes to red and yellow hues. The balance between these two types of melanin (黑色素) gives rise to the diverse range of skin tones we see in humans today. For instance, individuals with high levels of eumelanin typically have darker skin, which provides greater protection against the harmful effects of ultraviolet (UV) radiation from the sun.The production of melanin (黑色素) is stimulated by exposure to UV light. When our skin is exposed to sunlight, it triggers the melanocytes to produce more melanin (黑色素) as a natural defense mechanism against UV damage. This is why people often develop a tan after spending time outdoors. However, excessive sun exposure can lead to skin damage and increase the risk of skin cancer, making it essential to protect our skin with sunscreen and protective clothing.In addition to its protective role, melanin (黑色素) also has other important functions in the body. For example, it helps to absorb harmful free radicals, which can cause oxidative stress and damage to cells. This antioxidant property of melanin (黑色素) may contribute to the overall health of our skin and may even play a role in preventing certain diseases.Interestingly, melanin (黑色素) is not only found in humans but also in many other organisms, including animals and plants. In animals, melanin (黑色素) is responsible for the coloration of fur, feathers, and scales, providing camouflage and protection from predators. In plants, melanin (黑色素) can be found in certain species, contributing to their coloration and possibly playing a role in protecting them from environmental stressors.Despite its many benefits, the production of melanin (黑色素) can sometimes lead to conditions such as hyperpigmentation or melasma, where patches of skin become darker than the surrounding areas. These conditions can be triggered by various factors, including hormonal changes, medications, and excessive sun exposure. Treatments for these conditions often involve topical creams, laser therapy, or other dermatological procedures aimed at reducing the excess melanin (黑色素) production.In conclusion, melanin (黑色素) is a vital pigment that influences not only our physical appearance but also our health. Understanding its functions and how it interacts with our environment is essential for maintaining healthy skin and protecting ourselves from potential damage caused by UV radiation. As research continues to uncover the complexities of melanin (黑色素), we gain deeper insights into its role in our bodies and the natural world, highlighting the importance of this remarkable pigment in our lives.

黑色素是一种迷人的色素，在决定我们皮肤、头发和眼睛的颜色方面发挥着至关重要的作用。它由被称为黑色素细胞的特殊细胞产生，这些细胞主要存在于皮肤中，但也可以在身体的其他部位找到，例如眼睛和内耳。个体体内黑色素（melanin）的数量和类型主要由遗传决定，但也可以受到环境因素的影响，例如阳光照射。黑色素（melanin）主要有两种类型：真黑色素和黄黑色素。真黑色素负责黑色和棕色的阴影，而黄黑色素则贡献红色和黄色的色调。这两种类型的黑色素（melanin）之间的平衡产生了我们今天在人体中看到的多样肤色。例如，具有高水平真黑色素的人通常皮肤较深，这为他们提供了更好的保护，以抵御来自太阳的紫外线（UV）辐射的有害影响。黑色素（melanin）的产生受到紫外线光照的刺激。当我们的皮肤暴露在阳光下时，它会触发黑色素细胞产生更多的黑色素（melanin），作为对紫外线损伤的自然防御机制。这就是为什么人们在户外待了一段时间后通常会变得晒黑。然而，过度的阳光暴露可能导致皮肤损伤，并增加皮肤癌的风险，因此保护我们的皮肤非常重要，例如使用防晒霜和穿着保护性衣物。除了其保护作用外，黑色素（melanin）在身体中还有其他重要功能。例如，它有助于吸收有害的自由基，这些自由基可能导致氧化应激和细胞损伤。黑色素（melanin）的抗氧化特性可能有助于我们皮肤的整体健康，甚至可能在预防某些疾病中发挥作用。有趣的是，黑色素（melanin）不仅存在于人类中，还存在于许多其他生物中，包括动物和植物。在动物中，黑色素（melanin）负责毛发、羽毛和鳞片的颜色，为其提供伪装和保护免受捕食者的侵害。在植物中，某些物种中也可以找到黑色素（melanin），它可能有助于它们的着色，并可能在保护它们免受环境压力方面发挥作用。尽管黑色素（melanin）具有许多好处，但它的产生有时会导致诸如色素沉着过度或黄褐斑等情况，其中皮肤的某些区域变得比周围区域更暗。这些情况可能由多种因素引起，包括激素变化、药物和过度的阳光暴露。治疗这些情况通常涉及局部药膏、激光治疗或其他旨在减少多余黑色素（melanin）产生的皮肤科程序。总之，黑色素（melanin）是一种重要的色素，不仅影响我们的外貌，还影响我们的健康。理解其功能以及它如何与我们的环境相互作用对于保持健康的皮肤和保护自己免受紫外线辐射造成的潜在损害至关重要。随着研究不断揭示黑色素（melanin）的复杂性，我们对其在我们身体和自然界中的作用有了更深入的了解，突显了这种非凡色素在我们生活中的重要性。