剑桥词典in football , a formation or system in which a team plays with four defenders , three midfielders who play directly in front of the defence , and two attacking midfielders who play just behind one centre forward （足球的）四三二一陣型（即四名後衛、三名後腰、兩名前腰和一名前鋒） 返回 4 3 2 1