Read the excerpt from stanzas 3 and 4 of "the turtle.”

it isn’t even hers but came to her
in the rain or the soft wind,
which is a gate through which her life keeps walking.

she can’t see
herself apart from the rest of the world
or the world from what she must do
every spring.
crawling up the high hill,
luminous under the sand that has packed against her skin,
she doesn’t dream

which effect does the repeated "s” sound have on this part of the poem?