可操左券比喻事情成功有把握。券契约。古代契约分为左右两片双方各执其一。左片叫左券，由债权人收执作为凭据。[查看详情]

瓮中捉鳖比喻要捕捉的对象无处逃遁下手即可捉到很有把握。英have full assurance to get go after an easy prey as one who catches a tuttle in a jar;[查看详情]

百无一失见“百不失一”。[查看详情]

百不失一一百次中也不会失误一次。形容极有把握决不会出差错。例从门应庭听堂室之言，什而失九，如升堂窥室百不失一。——汉王充《论衡》英cannot possibly go wrong; not a failure out of a hundred trials; never a failure in many trials;又说“百无一失”[查看详情]

必不挠北挠北：败北作战失败。必定不会失败。[查看详情]

万无一失形容有把握一点差错也不会出。英no danger of anything going wrong; infallible; surefire; be perfectly safe; cannot possibly go wrong;[查看详情]

十拿九稳办事情很有把握。例对于叔叔回国这桩十拿九稳的事大家还拟定了上千种计划甚至计划到要用这位叔叔的钱置一所别墅。——《我的叔叔于勒》英go percent sure; have nine chances out of ten;[查看详情]