VOA慢速英语 Agriculture Report - Let Us Plant Lettuce…
时间：2018-12-07 作者：英语课 分类：VOA慢速英语2009年（四）月
This is the VOA Special English Agriculture Report.
Even in ancient times, people liked to eat lettuce 1. Egyptians and Romans served the green, leafy vegetable at the end of dinner.
Now, people in some countries start the meal with lettuce as part of a salad. There are hundreds of kinds of lettuce. The main ones include head lettuce, such as iceberg 2, leaf lettuce, Boston, bibb and romaine.
Experts say lettuce is one of the easiest crops to grow in your garden. The best time to plant the seeds is during cool weather. The University of Illinois Extension advises that the best planting temperature is fifteen degrees Celsius 3.
Lettuce seeds are small, so do not place them too deep in the ground. If you plant some seeds every week or two, you will have crops ready to eat one after another.
To start the seeds inside, you can use a seed tray in your home or other shelter. This container should be deep enough to hold at least three centimeters of soil or more. There should be about one centimeter of space between the soil and the top of the container. The container should have holes in the bottom so the extra water can flow out.
Drop the seeds over the surface and cover them lightly with soil. If the soil is not already a little wet, give it some water. But do not drown the seeds.
Next, cover the seed tray with paper. When the seedlings 4 have come up far enough to touch the paper, take it off. You can transplant 5 the seedlings into the garden when they are about two to three centimeters tall. Do this when the weather is not too hot and not too cold.
Take out as much soil as you can with the seedlings. Then dig a hole in the ground bigger than the lettuce roots. Water the plants but not too heavily.
Harvest leaf lettuces 6 when the leaves are big enough to eat. Pull the leaves from the outside of the planting so the inside leaves will keep growing. Or, you can cut off the whole plant. Leave about two or three centimeters above the ground so the plant will re-grow. Cut off head lettuces at ground level.
Lettuce is best when served fresh, so make a salad and enjoy. Store the unused part in the refrigerator in a plastic bag. It will last at least a few days, sometimes longer.
And that's the VOA Special English Agriculture Report, written by Jerilyn Watson. You can find transcripts 7, MP3s and podcasts of our reports at voaspecialenglish.com. I'm Steve Ember.
- Get some lettuce and tomatoes so I can make a salad.买些莴苣和西红柿，我好做色拉。
- The lettuce is crisp and cold.莴苣松脆爽口。
- The ship hit an iceberg and went under.船撞上一座冰山而沉没了。
- The glacier calved a large iceberg.冰河崩解而形成一个大冰山。
- 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。
- Ninety-five per cent of the new seedlings have survived. 新栽的树苗95%都已成活。 来自《现代汉英综合大词典》
- In such wet weather we must prevent the seedlings from rotting. 这样的阴雨天要防止烂秧。 来自《现代汉英综合大词典》
- Some plants do not transplant well.有些植物不宜移植。
- Several of the patients had received kidney transplant.病人中有几位已接受了肾移植手术。
- My lettuces have gone to seed. 我种的莴苣已结子。 来自《现代汉英综合大词典》
- Are these lettuces home-grown or did you buy them in the market? 这些生菜是自家种的呢，还是你在市场上买的？ 来自辞典例句
- 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