Thorpe next set out to determine exactly when the chaffinch learns to sing.接着,索普就开始研究苍头燕雀是在什么时候学唱歌的.The chaffinch has three or four songs and produces them in a specific order.苍头燕雀合唱三、四种歌,唱的时候按着一定的先后次序....
5月份工程师们在一条氢燃料管线上发现一条裂隙。In May engineers found a leak in a hydrogen fuel line.下面是个令人毛骨悚然的深不见底的裂隙。Below was a terrifyingly deep crevasse.断层破裂可能只包括单独一条狭窄的主裂隙.Fault ruptures may consist of a single narrow main break....