beforehand
adv
bɪˈfɔːhænd
adv
1
before
something
else
happens
or
is
done
事先，预先，事前
The
police
need
to
be
briefed
beforehand
on
how
to
deal
with
this
sort
of
situation.
需要事先告诉警察这种情况怎样处理。
When
you
give
a
speech,
it’s
natural
to
feel
nervous
beforehand.
你在演讲之前感到紧张是很自然的。