Keep training. Owners often think that once a dog is trained, there is no need to carry on.

狗主往往认为，一旦狗受过训练，便没有必要继续进行。

youdao

Keep training. Owners often think that once a dog is trained, there is no need to carry on.

狗主往往认为，一旦狗受过训练，便没有必要继续进行。

youdao