The box turtle's hinged bottom shell (left) allows it to retreat inside the shell as if enclosed in a box - hence the name box turtle.
(The box turtle's hinged bottom shell (left; allows; it to retreat inside the shell as if enclosed in a box - hence the name box turtle) Context(The box turtle 's hinged bottom shell ( left allows,List([0, 50))):(it; to retreat; L:inside the shell)
The box turtle 's hinged bottom shell ( left allows,List([0, 50))
The box turtle's hinged bottom shell (left it
allows to retreat
it to retreat inside the shell as if enclosed in a box - hence the name box turtle
L:inside the shell