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美国科学60秒 SSS 2013-02-07

时间：2013-07-23 03:17:41

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（单词翻译）

 　　Adult ants communicate with pheromones, touch and even sound. Now researchers have discovered that developing ants called pupae have their own distinctive1 calls, which identify their social status within the colony. This finding is in the journal Current Biology. Ants rasp and chirp2 by scraping a spite on their waist against a ridged section of their abdomen3, but developing larvae4 are silent. So ants recognise them by chemical cues, size, shape and even squishiness. The teenage versions of ants, the pupae, have hard outer shells that lack pheromones. However, the pupae do have fully5 formed sound organs. The researchers thus record the audio from the pupae and discover clicking noises. The pulses' frequency and intensity6 are more like the adult worker's stridulations than the queen ant's sound. The pupae's snaps are brief because their cases keep them from moving much. Still the noise appears to work, when the researcher disturb the nest, the adult ants rescue noisy pupae before the silent larvae. For ants, as for people, it pays to be the squeaky wheal.


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1 distinctive Es5xr     
adj.特别的，有特色的，与众不同的
参考例句：
  • She has a very distinctive way of walking.她走路的样子与别人很不相同。
  • This bird has several distinctive features.这个鸟具有几种突出的特征。
2 chirp MrezT     
v.(尤指鸟)唧唧喳喳的叫
参考例句：
  • The birds chirp merrily at the top of tree.鸟儿在枝头欢快地啾啾鸣唱。
  • The sparrows chirp outside the window every morning.麻雀每天清晨在窗外嘁嘁喳喳地叫。
3 abdomen MfXym     
n.腹，下腹(胸部到腿部的部分)
参考例句：
  • How to know to there is ascarid inside abdomen?怎样知道肚子里面有蛔虫？
  • He was anxious about an off-and-on pain the abdomen.他因时隐时现的腹痛而焦虑。
4 larvae w2CxP     
n.幼虫
参考例句：
  • Larvae are parasitic on sheep.幼虫寄生在绵羊的身上。
  • The larvae prey upon small aphids.这种幼虫以小蚜虫为食。
5 fully Gfuzd     
adv.完全地，全部地，彻底地；充分地
参考例句：
  • The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气，然后全部呼出。
  • They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。
6 intensity 45Ixd     
n.强烈，剧烈；强度；烈度
参考例句：
  • I didn't realize the intensity of people's feelings on this issue.我没有意识到这一问题能引起群情激奋。
  • The strike is growing in intensity.罢工日益加剧。

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