axis
noun
ˈæksɪəs
noun
1
the
imaginary
line
around
which
a
large
round
object,
such
as
the
Earth,
turns
轴，轴线
The
Earth
rotates
on
an
axis
between
the
north
and
south
poles.
地球绕着南北两极之间的地轴自转。
2
a
line
drawn
across
the
middle
of
a
regular
shape
that
divides
it
into
two
equal
parts
〔将规则形状平分成相等两部分的〕对称中心线
3
either
of
the
two
lines
of
a
GRAPH
,
by
which
the
positions
of
points
are
measured
参考轴线，坐标轴