在他们把注意力转移到杜宾犬身上以前，这个丈夫和妻子的组合是已经在训练德国牧羊犬方面取得了很多成功的专家。
This husband and wife team were training experts who had already achieved considerable success working with German Shepherds before turning their attention to the Dobermann.
在他们把注意力转移到杜宾犬身上以前，这个丈夫和妻子的组合是已经在训练德国牧羊犬方面取得了很多成功的专家。
This husband and wife team were training experts who had already achieved considerable success working with German Shepherds before turning their attention to the Dobermann.
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