SOS
noun
ˌesəʊˈes
noun
1
a
signal
or
message
that
a
ship
or
plane
sends
when
it
is
in
danger
and
needs
help
〔遇险船只或飞机发出的〕紧急求救信号;
2
an
urgent
message
that
someone
is
in
trouble
and
needs
help
紧急求助的消息
This
is
an
SOS
for
a
Mr.
Tucker,
whose
mother
is
seriously
ill.
紧急寻找塔克先生，他的母亲病重。