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:
随便看	poisoning of cathode的意思 Poisoning of nerve tissue的意思 poisoning of pyrolytic substance of fluo rine containing polymers的意思 poisoning of reactor的意思 poisoning of seeds of melia azedarachl的意思 poisoning of the reactor的意思 poisoning of vitamin D的意思 Poisoning,Organic Arsenic的意思 Poisoning,Organic Mercury的意思 poisoning override的意思 poisoning overshoot的意思 Poisoning,Plant的意思 poisoning predictor的意思 poison的意思 Poisoning,Salmonella Food的意思 Poisonings and Occupational Diseases Injuries的意思 Poisonings,Arsenic的意思 Poisonings,Cadmium的意思 Poisonings,Carbon Monoxide的意思 Poisonings,Carbon Tetrachloride的意思 Poisonings,Ciguatera的意思 Poisonings,Ergot的意思 Poisonings,Fluoride的意思 Poisonings,Food的意思 Poisonings,Fungus的意思