razor
noun
ˈreɪzə
noun
1
a
tool
with
a
sharp
blade,
used
to
remove
hair
from
your
skin
剃（须）刀; 刮胡刀;
an
electric
razor
电动剃须刀
a
disposable
razor
一次性剃须刀
2
be on a razor/razor’s edge
to
be
in
a
difficult
position
where
a
mistake
could
be
dangerous
[英] 处于险境
BrE
Politically
we
are
on
a
razor
edge.
我们在政治上处于险境。