单词	softshell
释义	softshell /ˈsɒftʃɛl / (also softshell turtle) noun A freshwater turtle with a flattened leathery shell, native to Asia, Africa, and North America. Family Trionychidae: several genera and many species, including the spiny softshell (Apalone (or Trionyx) spinifera) of North America. Superficially, softshells can be distinguished by their dorsoventral compression, leathery shells, and elongate snout.... Other turtles identified were softshell (Apalone sp.) and snapping turtles (Chelydra sp.). Additionally, we question whether it is possible for softshell turtles to reach the Hudson River via the Erie Canal from Oneida Lake in a span of four years.
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