So right footed players find it easier to shoot to the left as facing, to shoot across the goal.

习惯用右脚射门的球员从左路进攻,会更容易把球射入球门

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So the idea here is shooting to the left if you're right footed is the natural direction, so left here means the natural direction.

就是说如果你习惯用右脚射门,那么你从左路攻门就是自然方向,在这里左路表示自然方向

耶鲁公开课 - 博弈论课程节选

which foot gets the down beat, right or left?

哪只脚踩重拍呢,左脚还是右脚

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Good, so one thing that's clearly missing here is I'm ignoring that in fact right footed players find it easier to shoot to their left, which is actually the goalie's right.

很好,我们忽略了这一点,我们忽视了实际上惯用右脚的球员,从左路射门会更容易些,罚球球员的左路就是门将的右路

耶鲁公开课 - 博弈论课程节选