请大神解析这篇英语文章的每句话的成分分析,以及语法结构分析,ThismuffledcreakiswhatresearchersheardrepeatedlywhentheylistenedtogiantSouthAmericanriverturtlesswimmingtogether.Itcouldhelpexplainhowtheani
请大神解析这篇英语文章的每句话的成分分析,以及语法结构分析,
ThismuffledcreakiswhatresearchersheardrepeatedlywhentheylistenedtogiantSouthAmericanriverturtlesswimmingtogether.Itcouldhelpexplainhowtheanimalscoordinatetheirbehavioursowellinthenestingseason,whenfemalesgatherinlargegroupsatbeachesbeforelayingtheireggs.
Theresearchersusedmicrophonesaboveandbelowthewatertorecordtheturtlesatdifferentstagesintheseason.Andwhenthenewlyhatchedturtlesandadultsweretogetherintheriver,scientistsheardadifferentsound.
(Turtlesounds)
This,theythink,isparentsguidingtheirnewlyhatchedbabiesontheirfirstmigration.Alsotheresearcherssaythattheirstudyalsoshowshowvulnerableturtlescouldbetoman-madenoisedisturbingthisquietbutseeminglyvitalchatter.
