usnea

简明释义

英[ˈʌsniə]美[ˈʌsniə;ˈʌzniə]

n. 松萝

英英释义

单词用法

同义词

反义词

例句

1.OBJECTIVE To study the effects of Usnea longissima polysaccharide (USLP)on immunologic function in mice.

目的研究长松萝多糖（USLP）对正常小鼠免疫功能的影响。

2.OBJECTIVE To study the effects of Usnea longissima polysaccharide (USLP)on immunologic function in mice.

目的研究长松萝多糖（USLP）对正常小鼠免疫功能的影响。

3.The herbalist recommended using usnea for its antimicrobial properties.

草药师推荐使用usnea，因为它具有抗微生物特性。

4.In traditional medicine, usnea is often used to treat respiratory infections.

在传统医学中，usnea常用于治疗呼吸道感染。

5.You can find usnea growing on trees in moist, shady forests.

你可以在潮湿阴凉的森林中找到生长在树上的usnea。

6.Some people use usnea as a natural remedy for sore throats.

一些人将usnea作为缓解喉咙痛的自然疗法。

7.The presence of usnea in an ecosystem indicates good air quality.

生态系统中存在usnea表明空气质量良好。

作文

In the vast realm of botany, there exists a fascinating lichen known as usnea. This unique organism, often referred to as 'old man's beard' due to its long, hair-like appearance, has captured the attention of both scientists and nature enthusiasts alike. Usnea is not just visually striking; it plays a significant role in various ecosystems. Found predominantly in temperate regions, this lichen thrives in clean air and moist environments, making it an excellent bioindicator for air quality. Its presence often signifies a healthy ecosystem, as it is sensitive to pollution and environmental changes. The structure of usnea is quite intriguing. It consists of a central cord that is surrounded by a layer of fungal filaments and green algae or cyanobacteria. This symbiotic relationship allows usnea to photosynthesize and produce its own food while also benefiting from the moisture and nutrients provided by the fungi. This remarkable partnership exemplifies the beauty of nature's interdependence. Historically, usnea has been used in traditional medicine by various cultures around the world. Indigenous peoples have recognized its potential for healing, utilizing it to treat infections and respiratory ailments. Modern herbalists and practitioners of alternative medicine continue to explore the therapeutic properties of usnea, particularly its antibacterial and antifungal effects. Research has shown that extracts from usnea may possess compounds that can combat certain pathogens, making it a subject of interest in the field of natural remedies. Moreover, the ecological significance of usnea extends beyond its medicinal uses. As a vital component of forest ecosystems, it provides habitat and food for various organisms. Birds and insects may rely on usnea for nesting materials or sustenance, while larger mammals may use it as a source of nutrition during harsh winters when other food sources are scarce. The intricate web of life that revolves around usnea highlights the interconnectedness of species within their habitats. However, the future of usnea is threatened by climate change and habitat destruction. As temperatures rise and pollution levels increase, the delicate balance that supports the growth of usnea is disrupted. Conservation efforts are essential to protect this lichen and its environment. By raising awareness about the importance of usnea in maintaining ecological health, we can inspire actions to safeguard our natural world. In conclusion, usnea is more than just a lichen; it is a vital organism that embodies the intricate relationships found in nature. Its beauty, medicinal properties, and ecological significance make it a subject worthy of study and protection. As we continue to explore the wonders of the natural world, let us not forget the lessons that usnea teaches us about resilience, interdependence, and the importance of preserving our environment for future generations.

在植物学的广阔领域中，存在一种迷人的地衣，称为usnea。这种独特的生物，由于其长而类似头发的外观，常被称为“老人的胡须”，吸引了科学家和自然爱好者的注意。Usnea不仅在视觉上引人注目；它在各种生态系统中扮演着重要角色。主要分布在温带地区，这种地衣在清洁的空气和潮湿的环境中茁壮成长，使其成为空气质量的优秀生物指示剂。它的存在通常意味着一个健康的生态系统，因为它对污染和环境变化非常敏感。 Usnea的结构相当有趣。它由一个中央绳索组成，周围包裹着一层真菌丝和绿色藻类或蓝细菌。这种共生关系使得usnea能够进行光合作用并自制食物，同时也从真菌中受益，获得水分和养分。这种非凡的伙伴关系展现了自然界相互依存之美。 历史上，各种文化都曾使用usnea作为传统药物。土著人民认识到其治疗潜力，利用它来治疗感染和呼吸道疾病。现代草药师和替代医学实践者继续探索usnea的治疗特性，尤其是其抗菌和抗真菌效果。研究表明，来自usnea的提取物可能含有能够对抗某些病原体的化合物，使其成为天然疗法领域的研究对象。 此外，usnea的生态重要性不仅限于其药用价值。作为森林生态系统的重要组成部分，它为各种生物提供栖息地和食物。鸟类和昆虫可能依赖usnea作为筑巢材料或食物来源，而大型哺乳动物则可能在严冬时将其作为营养来源。当其他食物来源稀缺时，围绕usnea的复杂生命网突显了物种在其栖息地内的相互联系。 然而，usnea的未来正受到气候变化和栖息地破坏的威胁。随着气温上升和污染水平增加，支持usnea生长的微妙平衡被打破。保护工作对于保护这种地衣及其环境至关重要。通过提高人们对usnea在维持生态健康中重要性的认识，我们可以激励采取行动来保护我们的自然世界。 总之，usnea不仅仅是一种地衣；它是一个重要的生物，体现了自然界中复杂的关系。它的美丽、药用特性和生态重要性使其成为值得研究和保护的对象。当我们继续探索自然界的奇迹时，让我们不要忘记usnea教会我们的关于韧性、相互依存以及保护环境的重要性，以便为后代留存。