keep a certain distance away 保持一定距离 ; 保持一定的距离
keep a certain away
保持一定的距离
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They could be told to only let their dog out in public wearing a muzzle, or to keep the dog away from certain parks and roads.
BBC: Dog control law could mean training sessions for owners
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