我们务必依次考量上述要素，以便理解它们是如何支撑并维护(犬只禀性)的重要基础。这一基础，正是工作犬力量的源泉。

We must consider each of these in turn in order to understand how they supply and maintain the essential foundation for strength in the working dog.

youdao

我们务必依次考量上述要素，以便理解它们是如何支撑并维护(犬只禀性)的重要基础。这一基础，正是工作犬力量的源泉。

We must consider each of these in turn in order to understand how they supply and maintain the essential foundation for strength in the working dog.

youdao