Defensive back

In American football and Canadian football, defensive backs (DBs) are the players on the defensive team who take positions somewhat back from the line of scrimmage; they are distinguished from the defensive line players and linebackers, who take positions directly behind or close to the line of scrimmage. The defensive backs, in turn, generally are classified into several different specialized positions:

单词	Defensive back
释义	Defensive back 英语百科 Defensive back In American football and Canadian football, defensive backs (DBs) are the players on the defensive team who take positions somewhat back from the line of scrimmage; they are distinguished from the defensive line players and linebackers, who take positions directly behind or close to the line of scrimmage. The defensive backs, in turn, generally are classified into several different specialized positions:
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