And even the American game has variants, as there are slightly different rules for the versions played by college teams, professional teams and Canadian Football League teams.

甚至连美式足球赛事也有各种不同，大学队、职业队和加拿大美式足球联盟球队的赛事略有不同的规则。

youdao

L. he ended up failing out of the Canadian Football League as well.

NEWYORKER: Most Likely to Succeed

The Saskatchewan Roughriders of the Canadian Football League (CFL) recently acquired the negotiating rights to former Ohio State quarterback Terrelle Pryor.

FORBES: What Terrelle Pryor and Tim Thomas Tell Us About Success

They hold his rights in the Canadian Football League and said he could come compete for a job as a backup.

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