美国科学60秒 SSS 2013-08-07
时间：2019-01-20 作者：英语课 分类：Scientific American(八)月
have you ever run into a former companion and discover you can't remember his name? this awkward situation is apparently 1 alien to dolphin, who can recall old companions up to 2 decades later. as a recent 60 second science xx explained, dolphins have signature resource that may serve individual names. but how long do they remember their friends titles? to find out, researchers looked at 43 captured dolphins that have moved among the same 6 facilities, living together in different combinations experience times. when the scientist play unfamiliar 2 signature resource for each dolphin, the test subject quickly xx bored. but when the dolphins have recalled the signature resource of the former companion, they move towards the speakers and even xx back of them. the study is in proceeding 3 xx the real society of London b. not even a separation of 20 years could dim the memory of one particular dolphin, which suggests these mammals may have lifelong social memories. perhaps it's time to change the old deccim about elephants to a dolphin never forgets.
- An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
- He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
- I am unfamiliar with the place and the people here.我在这儿人地生疏。
- The man seemed unfamiliar to me.这人很面生。
- This train is now proceeding from Paris to London.这次列车从巴黎开往伦敦。
- The work is proceeding briskly.工作很有生气地进展着。