成例: precedent; existing model; established customs 短语和例子无成例可循 have no precedent to go by; 你要我做的事有成例可援吗? is there a precedent for what you want me to do
援用: quote; cite; invoke 短语和例子援用成例 cite a precedent; 援用经典 quote from the classics; 援用条约 invoke a treaty
