VOA慢速英语-Development Report - Cooking Meals With the Sun
时间：2019-01-11 作者：英语课 分类：VOA慢速英语2008年（九）月
This is the VOA Special English Development Report.
Millions of people around the world cook their food over a smoky fire every day. It is often difficult to find wood for the fire. People who do not have wood must spend large amounts of money on cooking fuel. However, there is a much easier way to cook food using energy from the sun.
A panel 1 solar cooker
Solar cookers, or ovens, have been used for centuries. A Swiss scientist made the first solar oven in seventeen sixty-seven. Today, people are using solar cookers in many countries around the world. People use solar ovens to cook food and to heat drinking water to kill bacteria and other harmful organisms.
There are three kinds of solar ovens. The first is a box cooker. It is designed with a special wall that shines or reflects sunlight into the box. Heat gets trapped under a piece of glass or plastic covering the top of the cooker. A box oven is effective for slow cooking of large amounts of food.
The second kind of solar oven is a panel cooker. It includes several flat walls, or panels 2, that directly reflect the sun's light onto the food. The food is inside a separate container of plastic or glass that traps heat energy. People can build panel cookers quickly and with very few supplies. They do not cost much. In Kenya, for example, panel cookers are being manufactured for just two dollars.
The third kind of solar oven is a parabolic cooker. It has rounded walls that aim sunlight directly into the bottom of the oven. Food cooks quickly in parabolic ovens. However, these cookers are hard to make. They must be re-aimed often to follow the sun. Parabolic cookers can also cause burns and eye injuries if they are not used correctly.
You can make solar ovens from boxes or heavy paper. They will not catch fire. Paper burns at two hundred thirty-two degrees Celsius 3. A solar cooker never gets that hot. Solar ovens cook food at low temperatures over long periods of time. This permits people to leave food to cook while they do other things.
You can learn more about solar cooking at solarcooking.org. Or write to Solar Cookers International. The postal 4 address is nineteen nineteen Twenty-first Street, Sacramento, California, nine-five-eight-one-one, USA.
And that's the VOA Special English Development Report, written by Jill Moss 5. Transcripts 6 and audio archives of our reports are at voaspecialenglish.com.
- The unusual control panel on the walls caught our attention.墙上不同寻常的控制板引起了我们的注意。
- The panel of judges included several well-known writers.评判小组中包括几位知名作家。
- One of the glass panels in the front door was cracked. 前门的一块方玻璃破裂了。
- Make sure the panels are treated with a wood preservative. 确保镶板用木材防腐剂处理过。
- The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
- The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。
- A postal network now covers the whole country.邮路遍及全国。
- Remember to use postal code.勿忘使用邮政编码。
- Moss grows on a rock.苔藓生在石头上。
- He was found asleep on a pillow of leaves and moss.有人看见他枕着树叶和苔藓睡着了。
- Like mRNA, both tRNA and rRNA are transcripts of chromosomal DNA. tRNA及rRNA同mRNA一样，都是染色体DNA的转录产物。 来自辞典例句
- You can't take the transfer students'exam without your transcripts. 没有成绩证明书，你就不能参加转学考试。 来自辞典例句