sea
noun
siː
noun
1
the
large
area
of
salty
water
that
covers
much
of
the
earth’s
surface
海，海洋;
singular 单数, U
2
a
large
area
of
salty
water
that
is
mostly
enclosed
by
land
内海
C
the
Mediterranean
Sea
地中海
3
sea of sth
a
very
large
number
of
people
or
things
that
all
look
similar
大量某物，一大片某物
He
looked
out
at
the
sea
of
faces.
他放眼望去，人海茫茫。
4
(all) at sea
confused
or
not
sure
what
to
do
困惑，茫然不知所措
Living
in
a
foreign
country
can
mean
you’re
always
at
sea
about
what’s
going
on.
生活在异国他乡可能意味着你对周围的事总是茫然不知。
5
the seas
the
sea
–
used
especially
when
you
are
not
talking
about
a
particular
ocean
[文] 海，大海〔尤用于谈论非特定海洋时〕
literary
across
the
seas
(far
away)
遥远，远隔重洋
They
came
from
lands
across
the
seas.
他们来自极其遥远的地方。
6
one
of
the
broad
areas
that
seem
flat
on
the
moon
and
Mars
海〔指月球或火星表面的一片广阔平原〕
C