跟读练习: VOA Learning English - Agriculture Report # 392 - 通过YouTube学习英语口语
C1
This is the VOA Special English Agriculture Report.
37 句
如果句子过短或过长，请点击 Edit 进行调整。
1
This is the VOA Special English Agriculture Report.
2
Soil naturally contains harmless amounts of lead along with other metals.
3
Because of pollution, however, the amounts are higher the closer you get to cities and towns.
4
But experts say this should not stop gardeners from growing food if they take safety measures.
5
David Johnson is a chemistry professor in the State University of New York's College of Environmental Science and Forestry.
6
He explains that lead can enter the ground from leaded paint and leaded fuel and from industry.
7
And once lead gets into the soil,
8
it stays a long time.
9
It remains an environmental threat, especially to children.
10
Lead can harm mental and physical development even in babies before they are born.
11
If a test finds that soil has too much lead,
12
you might be advised to remove the soil or cover it with sod grass.
13
Different countries have different levels that they consider acceptable.
14
Carl Rosen of the University of Minnesota Extension notes that concerns about lead have increased now that more people are planting gardens.
15
But Professor Rosen says plants generally do not absorb much lead.
16
He says there is likely more risk from lead dust on plants
17
or from playing in the soil than from the plant itself.
18
Still, some plants do absorb more than others.
19
Experts say good choices for the garden include tomatoes, peppers, beans, and okra.
20
Among the plants that can absorb more contaminants,
21
they say, are root crops, leafy vegetables, and herbs.
22
If you grow carrots, for example,
23
you might want to peel them.
24
Dirt may be harder to remove from some crops than from others,
25
but all produce should be washed.
26
Gardens should be planted away from roads and structures, especially old buildings.
27
Home gardeners should plant away from the foundation of their house,
28
and lead amounts can be especially high near industrial areas and waste dumps.
29
Soil should also be tested for its pH level,
30
a measure of the acid and alkaline balance.
31
Experts say the ability to take up lead is reduced when the pH level is above 6.5.
32
Adding organic materials such as compost to soil can also make lead less available to plants.
33
Some people attempt a process called phytoremediation.
34
They try to remove lead from soil by growing certain plants that collect it.
35
But Professor Rosen says the process is complex and may not work.
36
And that's the VOA Special English Agriculture Report.
37
For more gardening information, go to voaspecialenglish.com.
下载应用
AI 为你说出的每个句子打分
TRENDING
热门
背景与概述
在这集《VOA特别英语农业报告》中，讲者探讨了与土壤相关的铅污染问题。通过对农民和园丁给出的建议，提供了关于如何安全种植蔬菜的实用信息。讲者引用了不同专家的观点，强调了铅可能对儿童和胎儿健康造成的潜在威胁。此外，报告也揭示了铅的来源，并提出在种植花园时应采取的安全措施。这对于任何希望在城市环境中种植食物的人来说，都是非常重要的知识。
日常交流的五个关键短语
- 安全措施 - 一种在进行某项活动时确保安全的方式。
- 铅污染 - 指由铅引起的污染，通常与工业或交通有关。
- 土壤测试 - 通过实验室分析，确定土壤中成分的过程。
- 适合的植物选择 - 适合在特定环境中生长的植物。
- 有机材料 - 来自自然的物质，用于改善土壤的品质。
逐步影子跟读指南
要有效提升您的英语口语能力，建议使用英语影子跟读的方法。以下是一些帮助您在本视频中练习的步骤：
- 听并理解：首先完整听一遍视频，注意讲者的发音和语调。
- 反复分段：将视频划分为小段落，每次集中练习一小段。
- 模仿发音：在播放的同时，尝试模仿讲者的语调和节奏，重点关注铅污染及安全措施的讨论。
- 记录与回放：录下您自己的声音，然后与原视频进行对比，找出需要改进的地方。
- 持续练习：每天花一些时间进行shadow speak练习，从中获取更多的英语口语练习经验。
结合以上步骤，您将能够有效提高您在英语口语中的流利度，尤其是在面对关于环境和种植相关话题时。誓言将铅的影响最小化，通过积极的语言练习为健康的生活方式铺路。
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。