思患预防怯防勇战明枪易躲，暗箭难防家贼难防积谷防饥防意如城防微虑远防微杜渐防民之口，甚于防川防患未然防不胜防防不及防杜隙防微杜微慎防杜渐防微杜渐防萌猝不及防暗箭...