在最新一项研究中，研究人员为解读乌龟的声音，对南美巴西的一只巨河龟——侧颈龟展开了逾期两年的追踪。
In the latest attempt to decode turtle talk , researchers tailed giant South American river turtles - Podocnemis expansa - in Brazil , over a two-year span .
侧颈龟