specialist
noun
ˈspeʃəlɪəst
noun
1
someone
who
knows
a
lot
about
a
particular
subject,
or
is
very
skilled
at
it
专家;
[+
in
]
an
attorney
who
is
a
specialist
in
banking
law
一名专攻银行法的律师
2
a
doctor
who
knows
more
about
one
particular
type
of
illness
or
treatment
than
other
doctors
专科医生
a
heart
specialist
心脏专科医生