[bù zú]
（不充足） not enough; insufficient; deficiency; shortage; insufficiency; inadequate
insufficient light
光线不足
inadequate energy sources
能源不足
be short of supplies
给养不足
be shorthanded; be understaffed
人手不足
underestimate
估计不足
not enough to attract people's attention
不足以引起人们的注意
lack confidence
信心不足
inadequate resources
资源不足
（不满某个数目） less than
in less than a year
不足一年
（不值得） not worth; be beneath; not deserve
not worth commending
不足称道
（不能） can't; should not
can't be taken as evidence
不足为凭
can't prove the point; not to prove the point
不足为据