A new or substitute offensive play called by the quarterback or a defensive formation called by a linebacker at the line of scrimmage as an adjustment to the opposing side's formation. 改變打法一種在橄欖球爭球線(xiàn)上作為就對方陣勢的調整，由四分衛發(fā)令的新的或替代進(jìn)攻打法，或由后衛發(fā)令的防守陣勢
滬公網(wǎng)安備 31011502000490號
電信業(yè)務(wù)許可證編號：滬B2-20190700
