[科学美国人60秒] SSS 2015-11-03
时间：2019-01-20 作者：英语课 分类：2015年Scientific American(十一)月
Ten years ago, a bacteria disease began to eat away the Florida citrous crop. It's called Huang Huang Bin 1, or citrous greening, and it causes mishap 2 in bitter green fruits and eventually dead trees. Since 2005, the infection is estimated to have caused billions of dollars in damage. And the microbe did all that with the unwitting help of a tiny winged insect, the Citrous ?, which spreads the bacteria as it feeds. But now researchers at UFDA and University Of Florida have come up with a pesticide 3 freeway to battle the insect by disrupting its ability to find a mate. When male soulmates are looking for love, they beat their wings, sending vibrations 4 along a tree's branches. Nearby females pick up that signal and send back one of their own, which tells males to come hither. The researchers eavesdroped on that with a microphone rigged to a electonic microcontroller. And when the controller identified the male's call, it sent out a decoy female response more quickly than real female could respond. And that imposter call lure 5 the males to the device where instead of a mate, they find flypaper. The researchers presented their result at a meeting of the acoustic 6 society of America in Jackswill, Florida. The technique is not ready for the limelight just yet. For one, though the decoy call does fool the bugs 7, they are still adapted to avoiding the flypaper. But the researchers say this sort of signal jaming interference might be able to disrupt the insects' ability to find a mate, cutting overall numbers of the pest. A similar technique has worked in vineyards and if it works on orange , it could help citrous growers get out of the squeeze.
- He emptied several bags of rice into a bin.他把几袋米倒进大箱里。
- He threw the empty bottles in the bin.他把空瓶子扔进垃圾箱。
- I'm afraid your son had a slight mishap in the playground.不好了，你儿子在操场上出了点小意外。
- We reached home without mishap.我们平安地回到了家。
- The pesticide was spread over the vegetable plot.菜田里撒上了农药。
- This pesticide is diluted with water and applied directly to the fields.这种杀虫剂用水稀释后直接施用在田里。
- We could feel the vibrations from the trucks passing outside. 我们可以感到外面卡车经过时的颤动。
- I am drawn to that girl; I get good vibrations from her. 我被那女孩吸引住了，她使我产生良好的感觉。 来自《简明英汉词典》
- Life in big cities is a lure for many country boys.大城市的生活吸引着许多乡下小伙子。
- He couldn't resist the lure of money.他不能抵制金钱的诱惑。
- The hall has a fine acoustic.这个大厅的传音效果很好。
- Animals use a whole rang of acoustic, visual,and chemical signals in their systems of communication.动物利用各种各样的听觉、视觉和化学信号来进行交流。