这种狗每年可以繁殖两窝幼崽。

This type of dog can ___breed twice a year, producing litters of puppies.

这个农场专门培育纯种牧羊犬。

This farm specializes in ___breeding purebred sheepdogs.

压力往往会滋生更多的焦虑。

Stress tends to ___breed more anxiety.

这个品种的猫以温顺的性格和柔软的毛发著称。

This ___breed of cat is famous for its gentle nature and soft fur.