-lookaheadintothefutureandbackintothepast;beovercautiousandindecisive;lookbeforeandbehind[after];lookforeandaft[forwardandbackward];takeintoaccountbothpastexperienceandthesituationthatmaypossiblyariseinthefuture;thinkovercarefullybeforedoingsth.;tread(as)oneggs;watchinfrontandbehind;weighone'sstepsbythinkingofconsequences:
Lookbeforeyouleap.Don'tbesofoolhardy.做事要瞻前顾后，不要这样鲁莽。