sharpen
verb
ˈʃɑːpən
verb
1
to
make
something
have
a
sharper
edge
or
point
（使）变锋利 （尖锐，清晰）
I,T
Anne
sharpened
her
pencil
and
got
out
her
homework.
安妮把铅笔削尖，然后拿出家庭作业来。
2
to
make
a
feeling
stronger
and
more
urgent
使〔某种感觉〕增强，加强
T
A
series
of
attacks
have
sharpened
fears
of
more
violence.
一连串的袭击事件增加了人们对发生更多暴力事件的担心。
3
sharpen sth up
also
又作
↔
to
improve
something
so
that
it
is
up
to
the
necessary
standard,
quality
etc
使提高，使改进
T
The
course
will
help
students
sharpen
their
writing
skills.
这门课程将帮助学生提高写作技巧。