单词：quasivarieties
单词：quasivarieties 相关文章
We used to be a nation of farmers. But now it’s less than two percent of the population in the United States. And so, a lot of us don’t know what it takes to grow food. Over 12 thousand years ago
其他文化
by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?
数学英语
By Paula Wolfson White House 31 May 2006 View Bush comments on Iraq allegations (Real Video) President Bush says he is troubled by allegations U.S. Marines killed unarmed Iraqi civilians last year in the city of Haditha. Mr. Bush says if laws were b
2006年VOA标准英语（五月）
Unit 22 Chuck high-fat cheese。 Unit 22 拒吃高脂肪起司 One ounce oI most cheeses----one measly slice----averages about 100 calories and 7 or 8 grams of fat. 大部分的奶酩只要一盎司____即使是微不足道的一小片___平均都含大
减肥瘦身英语口语话题
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.
Scientific American(十)月
EXPLORATIONS - Working to Protect Plants for Future Generations CHRISTOPHER CRUISE: Im Chrisopher Cruise. MARIO RITTER: And Im Mario Ritter with EXPLORATIONS in VOA Special English. Today we tell about concerns about plant life, including agricultura
2012年VOA慢速英语(二)月
By Bill Rodgers Washington 19 May 2008 The Green Revolution is a good example of how technological advances can have a dramatic effect on economic development - in this case on food production. Other technological innovations are helping to improve a
VOA标准英语2008年（五月）
Ethiopian scientist was named on Thursday as the winner of the 2009 World Food Prize in an event at the U.S. State Department. Ejeta, a faculty member at Purdue University in the Midwestern U.S. state of Indiana, was honored for his work on drought
VOA标准英语2009年(六月)
Climate Change May Overwhelm Farmers A new study says the pace and severity of climate change may overwhelm small-scale farmers in Africa. The study describes those farmers as the mainstay of food production on the continent. The findings were releas
VOA标准英语2014年(九月)
23. Illustrated with an entertaining array of examples from both high and low culture, the trend that Mr. McWhorter documents is unmistakable. 【分析】句子主干为 the trendis unmistakable。Illustrated with...culture为过去分词短语作方式
考研英语长难句讲解
Nestled between the Pacific Ocean to the west and the Andes mountain range on the east, Chile's producers have traditionally thrived in this Mediterranean-like climate. But with temperatures rising and rains becoming scarcer, producers are being forc
2015CRI中国国际广播电台
'I KNOW NOTHING about wine--where do I start?' is perhaps the most frequent question I am asked. An obvious starting point is with grape varieties, which each have their own distinctive character and flavor. 我对葡萄酒一无所知──我该从哪
阅读空间
Do Peru's potatoes have the right stuff? 秘鲁的土豆能经受住考验吗？ That's the question scientists will be asking in Lima next month, when a selection of tubers will begin undergoing tests to determine whether they're fit to grow on Mars
阅读空间
How long does it usually take you to make delivery? 你们通常要多久才能交货？ Could you make prompt delivery? 可以即期交货吗？ Would you accept delivery spread over a period of time? 不知你们能不能接受在一段时间里分批
实用英语
May I have an idea of your prices? 可以了解一下你们的价格吗? Can you give me an indication of price? 你能给我一个估价吗? Please let us know your lowest possible prices for the relevant goods. 请告知你们有关商品的最低价
实用英语
Ethiopian scientist was named on Thursday as the winner of the 2009 World Food Prize in an event at the U.S. State Department. Ejeta, a faculty member at Purdue University in the Midwestern U.S. state of Indiana, was honored for his work on drought a
VOA双语新闻 2009年6月
Scientists have now started to breed drought resistant crops which they hope will combat East Africa's worst drought in 60 years. More than 13 million people across Africa are facing severe food shortages. But as CRI's Su Yi reports, a new strain of
世界各地新闻集锦