最終更新日：2022/12/23
So it is that one of the characteristics that the sperm whale shares with all cetaceans is that it swims by flexing its tail flukes dorso-ventrally, a less efficient way of swimming than that of its distant piscine ancestors, but a mode of locomotion that derives directly from the galloping of its more recent terrestrial ones.
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元となった例文
So
it
is
that
one
of
the
characteristics
that
the
sperm
whale
shares
with
all
cetaceans
is
that
it
swims
by
flexing
its
tail
flukes
dorso-ventrally,
a
less
efficient
way
of
swimming
than
that
of
its
distant
piscine
ancestors,
but
a
mode
of
locomotion
that
derives
directly
from
the
galloping
of
its
more
recent
terrestrial
ones.
