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Rebecca949 发表于 2012-5-8 09:41

VOA慢速英语2012.05.08

[audio]http://sound.yywz123.com/tingbbs/voa/voa20120508.mp3[/audio]



He also notes that researchers are studying other factors that could affect bee populations. These include parasites, diseases and stress caused by transporting beehives to farms.他还提到,研究人员正在研究其他可能会影响蜜蜂数量的原因,诸如寄生虫、疾病,以及把蜂巢运到农场所产生的压力。
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momosense 发表于 2012-5-8 15:58

:)

gqinchunh123 发表于 2012-5-13 18:01

AnnStone 发表于 2012-5-14 09:28

Some European coutries have banned the pasiticides. And there are growing calls to ban them in the United States as well.

dentist 发表于 2012-5-30 22:01

Some European countries have baned the pesticide ,and they are going call to ban them in the United States as well.

pxlcqy 发表于 2012-6-1 15:31

some european countries have baned pesticide,and there are growing calls to ban them in the united states as well.

jy1991 发表于 2012-6-25 23:14

That means farmers do not need to spray a whole field. Instead there is a little bit of insecticide inside each plant -- including the pollen and nectar that the bees want.这意味着,农民不必在整块田地里喷洒农药了。而每棵植株里只有少量杀虫剂,蜜蜂需要的花粉和花蜜里也有。
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There is not enough pesticide to kill them. But the new research in the journal Science says it may harm them anyway.植物内的那些杀虫剂还不足以杀死蜜蜂。但《科学期刊》上的新研究表明,这可能会或多或少地危害到蜂群。

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