essential
adj
noun
ɪˈsenʃəl
adj
1
extremely
important
and
necessary
极其重要的; 必不可少的
[+
for/to
]
A
good
diet
is
essential
for
everyone.
良好的饮食对于每个人都是极为重要的。
it
is
essential
(that)
It
is
essential
that
our
pilots
are
given
the
best
possible
training.
我们的飞行员要受到最好的培训，这是必不可少的。
it
is
essential
to
do
sth
It
is
essential
to
book
in
advance.
提前预订是完全必要的。
Window
locks
are
fairly
cheap
and
absolutely
essential
.
窗锁相当便宜，绝对有必要安装。
Even
in
small
companies,
computers
are
an
essential
tool.
即使在小公司里，计算机也是必不可少的工具。
2
the
essential
part,
quality,
or
feature
of
something
is
the
most
basic
one
最基本的; 本质的
The
essential
difference
between
Sam
and
me
was
the
fact
that
I
took
life
seriously.
我和萨姆的根本区别在于我对生活持认真的态度。
The
essential
point
of
relay
racing
is
that
it
is
a
team
effort.
接力赛跑的基本要点是讲究配合。
noun
3
something
that
is
necessary
to
do
something
or
in
a
particular
situation
必需品; 必不可少的东西
C usually plural 一般用复数
She
packed
a
few
essentials.
她把几件生活必需品装进箱子。
We
only
had
the
bare
essentials
(=the
most
necessary
things)
.
我们只有那几样最要紧的东西。
4
the essentials
the
basic
and
most
important
information
or
facts
about
a
particular
subject
要点，要素
plural 复数
[+
of
]
We
have
no
reason
to
doubt
the
essentials
of
the
girl’s
story.
我们没有理由怀疑这个女孩描述的要点。