cover of episode Learning English Podcast - October 29, 2024

Learning English Podcast - October 29, 2024

2024/10/29
logo of podcast VOA Learning English Podcast - VOA Learning English

VOA Learning English Podcast - VOA Learning English

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A
Ana Mateo
J
John Russell
美国疾病控制与预防中心
Topics
美国疾病控制与预防中心:一项新的政府研究表明,美国青少年的吸烟率在今年降至历史最低点。这项研究是对美国青年进行的调查,由美国疾病控制与预防中心(CDC)进行。调查涉及6年级到12年级的学生,近30000名来自283所美国学校的学生参与了这项从1月到5月进行的调查。研究显示,中学生和高中生最近使用至少一种烟草制品的数量下降了20%,这表明自1999年CDC调查开始以来,这些产品的使用率最低。美联社报道称,这一下降主要是因为最近另一项政府调查显示,2024年美国青少年电子烟的使用率降至10年来最低水平。政府记录显示,电子烟是青少年中最常用的烟草制品。这些下降与政府采取的多种措施有关,包括提高产品成本、开展公共卫生教育宣传活动、实施年龄限制以及加强执法力度等。 Ana Mateo:哥伦比亚的科学家们研发出一种新型植物性食物物质,可以保护蜜蜂免受农业中使用的危险化学物质的侵害。这种物质可以保护蜜蜂免受神经毒素的损害,这些神经毒素通常用于农业,并会损害蜜蜂的运动系统和记忆力。这种物质由类黄酮制成,类黄酮以其健康益处而闻名,来自植物,是一种次生代谢产物。在第一轮测试中,科学家们让蜜蜂入睡,并将它们放入小的实验室试管中,然后逐一喂食这种物质。测试现已转向现实世界的情况。 John Russell:力量训练中,达到力竭并非总是必要的。对于普通健身者来说,在距离力竭还有5-10次重复时停止训练即可获得良好的效果。过度训练反而可能导致疲劳和受伤,甚至可能导致横纹肌溶解症等严重后果。重要的是要找到适合自己的训练强度,并坚持规律的锻炼。

Deep Dive

Key Insights

What is the purpose of the Learning English program?

The program is designed for English learners, using a limited vocabulary and slower speech to help listeners improve their English skills.

What was the key finding of the CDC's youth tobacco use survey in 2024?

The survey showed a 20% drop in tobacco product use among middle and high school students, with the lowest usage rate since the survey began in 1999.

What factors contributed to the decrease in youth tobacco use?

Factors include increased product costs, public health education campaigns, age restrictions, and stricter enforcement against sellers targeting children.

What is the most commonly used tobacco product among U.S. teens in 2024?

E-cigarettes are the most commonly used tobacco product, with usage falling to under 6% in 2024, the lowest rate in 10 years.

How has tobacco use among different groups of students changed in 2024?

Tobacco use among girls and Hispanic students decreased, but it increased among American Indian and Alaska Native students. Nicotine patch use rose among white youth.

What did scientists in Colombia develop to protect bees from pesticides?

They developed a plant-based food substance containing flavonoids, which protects bees' brains from neurological damage caused by pesticides.

Why are bees important for ecosystems and food production?

As pollinators, bees play a crucial role in maintaining natural ecosystems and ensuring food production by helping plants reproduce.

What is the potential impact of training until failure in weight training?

Training until failure may help build muscle mass but is not necessary for increasing strength. It can also lead to exhaustion, potentially causing missed workouts or rare harmful conditions like rhabdomyolysis.

What advice do experts give for achieving fitness goals without training until failure?

Experts suggest working out intensely but stopping within 5-10 repetitions of failure. This approach can still improve health and fitness without pushing to complete exhaustion.

What is the main conflict in Lesson 44 of Let's Learn English with Anna?

Anna faces an internal conflict between wanting to eat junk food and knowing she should eat healthy food.

What does the term 'guilty pleasure' mean in the context of food?

A guilty pleasure refers to something enjoyable, like junk food, that is not harmful in moderation but could be considered unhealthy if consumed frequently.

Chapters
A new government study reveals an all-time low in US teen smoking rates, with a significant drop in the use of various tobacco products. The decrease is linked to factors such as increased product costs, public health campaigns, and stricter regulations.
  • All-time low in U.S. teen smoking rates.
  • Significant drop in e-cigarette use among youth.
  • Decrease linked to product cost increases, public health campaigns, age restrictions, and enforcement actions.

Shownotes Transcript

Learning English use a limited vocabulary and are read at a slower pace than VOA's other English broadcasts. Previously known as Special English.