(noun.) (law) a proceeding that permits a person to enter into a lawsuit already in progress; admission of person not an original party to the suit so that person can protect some right or interest that is allegedly affected by the proceedings; 'the purpose of intervention is to prevent unnecessary duplication of lawsuits'.
(noun.) the act of intervening (as to mediate a dispute, etc.); 'it occurs without human intervention'.
(noun.) a policy of intervening in the affairs of other countries.
富兰克林校对
弗洛伊德手打