radius
noun
ˈreɪdiəs
noun
1
the
distance
from
the
centre
to
the
edge
of
a
circle,
or
a
line
drawn
from
the
centre
to
the
edge
〔圆的〕半径;
2
an
area
that
covers
a
particular
distance
in
all
directions
from
a
central
point
半径范围; 周围
The
shock
of
the
explosion
was
felt
over
a
radius
of
forty
miles.
爆炸引起的剧烈震动在方圆 40 英里内都能感觉得到。
within
a
10-mile/200-metre
etc
radius
There
are
more
than
a
dozen
golf
courses
within
a
15-mile
radius
of
St
Andrews.
圣安德鲁斯方圆 15 英里之内起码有 12 个高尔夫球场。
3
the
outer
bone
of
the
lower
part
of
your
arm
[术语] 桡骨
technical