Only the sound of insects filled the air as I walked through the empty town that summer day so long ago.
VOA: special.2009.07.04
The little insects were crawling around, the plants were there. And come back and look at it, over a period of weeks, and see what's changing.
我可以看到昆虫爬来爬去,还看到有些植物,几个星期后,再来看,看看发生了什么变化。
Well, i mean a cockroach might be seen as being harmful because we consider them dirty, disgusting, revolting insects and we don't define insects as something we eat, at least in our culture.
蟑螂看起来可能是有害的,因为我们觉得它脏,恶心,是令人厌恶的害虫,我们不把害虫定义为食物,至少在我们的文化中是这样的
It helped raise public awareness of the dangerous use of chemicals to kill insects and the pollution of the environment.
VOA: special.2010.12.15
Supporters of one kind of G.M.cotton, for example,note evidence that it can help a plant resist insects and viruses.
VOA: special.2010.03.23
Sweet,peaceful stars filled the sky as the night birds sang softly, and tiny insects buzzed in the soft air.
VOA: special.2009.12.12
One day, the insects' love of sweets caused them to attack a ship that was bringing sugar to the camp.
VOA: special.2009.01.24
Last year, an American study showed such a link between Parkinson's and pesticides, like those used for killing insects.
VOA: special.2009.04.07
Cacao trees grown on farms are much more easily threatened by disease and insects than wild trees are.
VOA: special.2010.02.17
The fossils are from creatures as small as insects to those that were bigger than a modern elephant.
VOA: special.2010.04.07
Boric acid has been used to kill other insects including cockroaches, termites and ants inside homes since the middle of last century.
VOA: special.2011.02.23
Experts say cabbage does not need full sun and grows easily if you water it regularly and protect against insects and disease.
VOA: special.2009.03.03
The fast was to protest the poisoning of grape workers and their children by the dangerous chemicals growers used to kill insects.
VOA: special.2009.09.06
Agriculture Report. Plant breeders and genetic engineers keep working to give crops the strength to resist threats like insects,diseases, droughts or floods.
VOA: special.2009.10.27
The La Brea insects give scientists a close look at the history of insects in southern California.
VOA: special.2010.04.07
It serves as a landing area for bees and other insects that spread pollen to the plant.
VOA: special.2010.04.06
The genetic changes cause the bodies of the insects to attack the Plasmodium parasite, blocking its development.
VOA: special.2010.04.20
But it warns that mosquitoes are becoming increasingly resistant to pesticides, the products used to kill insects.
VOA: special.2009.05.26
For example, the insects can smell carbon dioxide in the breath of a person or animal from as far away as sixty meters.
VOA: special.2009.05.26
Grafting can join scions with desirable qualities to rootstock that is strong and resists disease and insects.
VOA: special.2010.05.18
Professor Reppert says scientists thought they understood the control system in the monarchs until they took a closer look at the insects' antenna.
VOA: special.2010.04.27
As a result, the study in China found that the cotton plants could also help protect nearby crops against damage by the insects.
VOA: special.2010.05.25
To learn how this is done, researchers first observe the normal flight paths of the insects.
VOA: special.2010.04.27
They have had their genes changed to contain a special characteristic, like resistance to certain insects.
VOA: special.2010.11.09
The Stockholm Convention governs some kinds of industrial chemicals and pesticides products meant to kill insects.
VOA: special.2009.06.23
If aphids,thrips or other insects invade your rose bushes, you may be able to force them off with just a strong spray of water.
VOA: special.2010.06.15
These include natural and organic methods to control harmful insects and weeds instead of using chemicals.
VOA: special.2009.07.14
Butterflies are beautiful insects, but you would not want to have butterflies in your stomach.
VOA: special.2009.06.28
Other researchers are working on ways to spread these genetically modified insects among mosquito populations.
VOA: special.2009.12.07
Most do not spread malaria. Some of the insects have disease-fighting systems that kill Plasmodium.
VOA: special.2009.12.22
应用推荐