-(不充足)notenough;insufficient;deficiency;shortage;insufficiency;inadequate:
insufficientlight;光线不足
inadequateenergysources;能源不足
-(不满某个数目)lessthan:
inlessthanayear不足一年
-(不值得)notworth;bebeneath;notdeserve:
notworthcommending不足称道
-(不能)can't;shouldnot:
can'tbetakenasevidence;不足为凭
can'tprovethepoint;nottoprovethepoint不足为据