狗在生命前两年长的非常快，体型较大的品种两岁就能发育成熟，达到相当于美国选民法定年龄的水平。

And dogs grow quickly in the first couple of years, with bigger breeds reaching the equivalent of U.S. voting age in toddlerhood, by age two.

youdao

狗在生命前两年长的非常快，体型较大的品种两岁就能发育成熟，达到相当于美国选民法定年龄的水平。

And dogs grow quickly in the first couple of years, with bigger breeds reaching the equivalent of U.S. voting age in toddlerhood, by age two.

youdao