You can never teach an old dog new tricks.
你不能使守旧的人接受新事物。
Yet, some people say that you can never teach an old dog new tricks.
然而，有人说你没办法教会老狗新的花样。
Yet, some people say that you can never teach an old dog new tricks.
为了成功，人民必须经常学习新的技能。
Yet, some people say that you can never teach an old dog new tricks.
为了成功，人民必须经常学习新的技能。
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