例: example; instance可: approve援: pull by hand; hold你要我做的事有前例可援吗: is there a precedent for what you want me to do通例可援: usages can be quoted无例可援: have no precedent to go by无先例可援: have no precedent to go by有例可援: there is a precedent to quote.; with a precedent for that有先例可援: have a precedent to go by史无前例: there was no parallel in history.; be unprecedented in the nation's history; unprecedented in history; without parallel in history; without precedent in history 史无前例的壮举 an unprecedented feat; 工农红军胜利地完成了史无前例的二万五千里长征。 the workers' and peasants' red army victoriously completed its unprecedented 25,000 li long march 史无前例的: u recedented; unprecedented; without precedent in his history; without precedent in history史无前例地: unprecedentedly无前例的: unexampled; unheard-of; unprecedented a. never done or known before史无前例的规模: unprecedented scale史无前例的旅程: epic journey史无前例的壮举: unparalleled feat前所未有的,史无前例的: unprecedented你要我做的事有成例可援吗: is there a precedent for what you want me to do前例: precedent 史无前例 without precedent in history; unprecedented; 无前例可援 have no precedent to go by; 你要我做的事有前例可援吗? is there a precedent for what you want me to do史无前例的长江三峡大坝工程: the unprecedented project:construction of the three-gorges dam on the yangtze river前例,先例: precedent先例,前例: precedent无前提: premise-free无前肢: abrachia不可援救的: irrecoverable