单词：boll weevil
boll weevil的用法和样例：
例句
- Gossypol, which is produced by gland cells in the leaves of cotton, is an attractant to the boll weevil.棉叶腺胞分泌的棉酚对棉铃象鼻虫是一种引诱剂。
单词：boll weevil 相关文章
New Wheelchair Is Easier to Use, Increases Mobility 新型轮椅易于使用可增加流动性 For many disabled people, the only way to move around is by using a wheelchair. Those who cannot afford powered wheelchairs propel themselves with their ar
VOA标准英语2015年(三月)
This is the VOA Special English Agriculture Report. In two thousand eight, scientists reported on a study of cotton grown in six provinces in northern China. The study involved bollworms, a major threat to cotton farmers. It also involved Bt cotton,
2010年VOA慢速英语(五)月
【英文原文】 'There is no good in my going to see little Hans as long as the snow lasts,' the Miller used to say to his wife, 'for when people are in trouble they should be left alone, and not be bothered by visitors. That at least is my idea a
英语散文阅读
By Nico Colombant Monrovia 04 January 2006 Later this month, Liberia will inaugurate Africa's first elected female president, Ellen Johnson-Sirleaf. Her task will be to help rebuild her war-shattered
2006年VOA标准英语（一月）
This is the VOA Special English Agriculture Report. Cotton plants Bollworms are a traditional threat to cotton crops. Young ones feed on the boll, the part of the cotton plant that contains the seeds. A bacterium known as Bt is able to kill bollworm
VOA慢速英语2008年（十一）月
By Challiss McDonough Tyre 28 July 2006 As Israel's military offensive in Lebanon continues for a third week, the death toll on both sides of the border is climbing. There has been intense fighting between Hezbollah and Israeli troops, and Israeli a
2006年VOA标准英语（七月）
By Margaret Besheer Baghdad 02 July 2007 The American military says it has evidence Iran is using the Lebanese Shiite militia group Hezbollah as a proxy to arm Shiite militants in Iraq. Officials also say Iran's elite Quds Force was aware of and help
2007年VOA标准英语（七月）
According to a study published this week in Science, genetically-engineered cotton planted near conventional crops may help protect the regular plants from bugs. The researchers say the finding could potentially protect a range of crops over million
VOA标准英语2008年（九月）
Immigrants Learn English With Their Children Tha Neih Ciang is learning vocabulary words with other immigrant students. She's among four dozen Burmese youngsters at Bollman Bridge Elementary School, which is less than an hour's drive from Washington.
VOA标准英语2012年(一月)
A statue on Main Street in Enterprise, Alabama, features a woman holding a large, black boll weevil above her head. While many U.S. cities have suffered because of the recession, one town in the southern state of Alabama, has fared surprisingly well.
VOA标准英语2010年(八)月
麻省理工研究者开发变速轮椅 For many disabled people, the only way to move around is by using a wheelchair. Those who cannot afford powered wheelchairs propel themselves with their arms, which often leads to fatigue, pain, and even perman
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Germany's Boll wins 2012 European table tennis championships COPENHAGEN, Oct. 21(Xinhua) -- Germany's Timo Boll powered his way to victory over Croatia's Tan Ruiwu at the finals of the 2012 European Table Tennis Championships in Herning, central Denm
英语新闻
The general mood among Twitter users can predict the rise and fall of the stock market almost a week in advance, a new study has found. A computer scientist in the US has discovered that the correlation between the Dow Jones and the collective public
阅读空间
This is IN THE NEWS in VOA Special English. The United States is proposing a big conference on Afghanistan and wants to invite Iran, one of its neighbors. Secretary of State Hillary Clinton says dealing with extremism in Afghanistan and Pakistan requ
2010年慢速英语(三)月
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英语新闻
Electric cars 电动汽车 All charged up for sharing 全力以赴 Vincent Bollor makes a risky bet on electric-car technology 文森特.布洛尔大胆下注电动汽车产业 Sep 10th 2011 | PARIS | from the print edition Adieu petrol, welcome Boll
经济学人综合
I'll get the almanack; and as I have heard devils can be raised with Daboll's arithmetic, 让我去把那本历书拿来瞧一瞧；我还听到人家说，用达波耳的数学还推算得出魔鬼来呢， I'll try my hand at raising a meaning out
白鲸记
The governor of the Reserve Bank, Dr Bollard, reduced the official cash rate (OCR) by half a percent from 3% to 2.5% today. For background to the OCR, listen to June 10th 2010 and follow the links. Most banks immediately dropped the floating mortgage
新西兰英语
The governor of the Reserve Bank, Alan Bollard, increased the official cash rate (OCR) from 2.5% to 2.75%. This is the first rise in three years. During the economic recession, Bollard reduced the OCR from 8.25% in July 2007 to 2.5% in April this yea
新西兰英语
The Governor of the Reserve Bank, Dr Bollard, kept the OCR at 2.5% today. Dr Bollard said he kept it at the same rate because of financial problems in Europe. Also the slowdown in the US is a concern. In addition, the US will need to borrow more mone
新西兰英语