松动髌骨往往可以证明在年轻狗，以及他们之前，迹象显示的麻烦。

Looseness of the patella often can be demonstrated in young dogs, well before they show signs of trouble.

youdao

松动髌骨往往可以证明在年轻狗，以及他们之前，迹象显示的麻烦。

Looseness of the patella often can be demonstrated in young dogs, well before they show signs of trouble.

youdao