knotweed

简明释义

英[ˈnɒtˌwiːd]美[ˈnɑtˌwid]

n. 紫菀科植物；蓼科杂草

英英释义

单词用法

同义词

反义词

例句

1.The free radical network scavenging agent of the invention is obtained by extracting raw materials which comprise forsythia, giant knotweed and myrobalam by organic solvent.

本发明的自由基网络清除剂，是用有机 溶剂从包括连翘、虎杖和诃子的原料中提取得到。

2.Rats paw swelling experiment show that Gentrin Knotweed P. E can significantly inhibited rat paw swelling rate.

大鼠足肿胀实验表明，虎杖提取物能明显抑制大鼠足肿胀度。

3.Resveratrol is an antioxidant naturally found in grapes and red wine, mulberries, peanuts and 'knotweed'.

白藜芦醇是一种天然抗氧化剂的葡萄和红酒中发现，桑树，花生和'虎杖'。

4.The traditional dyestuffs are mainly plant dyestuff such as indigo plant knotweed etc and mineral dyestuff is cinnabar.

传统染料主要是植物染料蓼蓝靛等多种，矿物染料有朱砂。

5.Newcomers include Japanese knotweed and Amur bush honeysuckle.

外来物种包括日本紫菀和灌木忍冬。

6.Many of the supplements on the market extract it from the Japanese knotweed plant, which is a plentiful and inexpensive source.

市场上的很多营养补充品都是从日本结草中提取白藜芦醇，而结草是一种既丰富又便宜的白藜芦醇来源。

7.In fact, the psyllid eats knotweed exclusively.

事实上，虎杖虱只吃这一种植物。

8.Removing knotweed can be a lengthy and costly process.

去除日本虎皮草可能是一个漫长而昂贵的过程。

9.The garden was overrun with knotweed due to its rapid growth.

由于生长迅速，花园里被日本虎皮草淹没了。

10.The real estate agent warned us about the presence of knotweed on the property.

房地产经纪人警告我们该物业上有日本虎皮草。

11.We need to find a way to control the spread of knotweed in our backyard.

我们需要找到控制我们后院中日本虎皮草扩散的方法。

12.Local authorities have initiated a program to eradicate knotweed from public areas.

当地政府已启动一项计划，以根除公共区域中的日本虎皮草。

作文

In the world of botany, few plants are as notorious as knotweed. This term refers to several species of perennial plants in the genus Fallopia, which are often characterized by their dense growth and ability to thrive in various environments. The most well-known species is Japanese knotweed (Fallopia japonica), which has become infamous for its invasive properties. Originally introduced to Europe and North America as an ornamental plant, knotweed has since spread uncontrollably, causing significant ecological damage.The rapid growth of knotweed can lead to a range of environmental issues. Its extensive root system can penetrate concrete and brick, causing structural damage to buildings and roads. This resilience makes it incredibly difficult to eradicate once established. Many property owners find themselves facing costly removal efforts, as traditional methods of weed control often prove ineffective against this persistent plant.Moreover, knotweed poses a threat to local biodiversity. It outcompetes native plants for resources such as sunlight, water, and nutrients, leading to a decline in native species. This not only disrupts local ecosystems but also affects wildlife that depends on native plants for food and habitat. The presence of knotweed can thus have cascading effects on the entire ecosystem, highlighting the importance of managing invasive species.Interestingly, despite its negative reputation, knotweed does have some uses. In traditional medicine, particularly in Asia, certain species of knotweed have been used for their purported health benefits. For example, Japanese knotweed contains resveratrol, a compound known for its antioxidant properties. Some herbalists advocate for its use in promoting heart health and combating inflammation. However, these benefits do not outweigh the ecological consequences of its invasion in non-native regions.In conclusion, while knotweed may offer some medicinal advantages, its status as an invasive species cannot be overlooked. The ecological damage it causes, coupled with the difficulties in controlling its spread, make it a significant concern for both environmentalists and property owners alike. Understanding the nature of knotweed is crucial in developing effective management strategies to protect native ecosystems. As we continue to learn more about the impact of invasive species, it becomes increasingly important to raise awareness about plants like knotweed and the challenges they present to our environment.

在植物学的世界里，鲜有植物像knotweed那样臭名昭著。这个术语指的是几种属于蓼科（Fallopia）属的多年生植物，通常以其密集的生长和在各种环境中生存的能力而闻名。最著名的物种是日本knotweed（Fallopia japonica），因其侵入性特征而声名鹊起。最初作为观赏植物引入欧洲和北美，knotweed随后失控扩散，造成了显著的生态损害。knotweed的快速生长可能导致一系列环境问题。它广泛的根系可以穿透混凝土和砖块，导致建筑物和道路的结构损坏。这种韧性使得一旦建立就非常难以根除。许多房主发现自己面临着昂贵的清除工作，因为传统的杂草控制方法往往对这种顽固植物无效。此外，knotweed对当地生物多样性构成威胁。它会与本地植物争夺阳光、水和养分，从而导致本地物种的衰退。这不仅破坏了当地生态系统，也影响了依赖本地植物作为食物和栖息地的野生动物。因此，knotweed的存在可能对整个生态系统产生连锁反应，突显出管理外来物种的重要性。有趣的是，尽管knotweed声名不佳，但它确实有一些用途。在传统医学中，尤其是在亚洲，某些种类的knotweed因其声称的健康益处而被使用。例如，日本knotweed含有白藜芦醇，这是一种以其抗氧化特性而闻名的化合物。一些草药师倡导其用于促进心脏健康和对抗炎症。然而，这些好处并不能抵消它在非本土地区入侵造成的生态后果。总之，虽然knotweed可能提供一些药用优势，但其作为外来物种的地位不容忽视。它造成的生态损害，加上控制其传播的困难，使其成为环保人士和房主共同关注的重要问题。了解knotweed的特性对于制定有效的管理策略以保护本地生态系统至关重要。随着我们对外来物种影响的认识不断加深，提高对像knotweed这样的植物及其对环境所带来的挑战的认识变得愈发重要。