in
duty有義務，有責任
as
in
duty
bound
有責任,
義不容辭
be
in
duty
bound
有義務(做某事)
be
in
duty
bound
to
do
sth.
有義務(做某事)
on
duty值班，當值
off
duty下班
Only
one
doctor
is
on
duty
today
-
the
other
doctor
is
off
duty.
今天只有壹個醫生值班，另壹位下班了。
duty
free免稅
in
duty有義務，有責任
as
in
duty
bound
有責任,
義不容辭
be
in
duty
bound
有義務(做某事)
be
in
duty
bound
to
do
sth.
有義務(做某事)
on
duty值班，當值
off
duty下班
Only
one
doctor
is
on
duty
today
-
the
other
doctor
is
off
duty.
今天只有壹個醫生值班，另壹位下班了。
duty
free免稅