不久以前，一些路过的邻居看到了我的一堂训练课。他们问我，为什么我既没有称赞狗儿，又没有奖励它们，却能让它们出色地工作那么长时间？
Not long ago, some neighbours stopped to watch a training session and asked me how I could get the dog to work so well and for so long without giving it some praise or reward.
不久以前，一些路过的邻居看到了我的一堂训练课。他们问我，为什么我既没有称赞狗儿，又没有奖励它们，却能让它们出色地工作那么长时间？
Not long ago, some neighbours stopped to watch a training session and asked me how I could get the dog to work so well and for so long without giving it some praise or reward.
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