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that might take a while. 这可能需要一段时间
Walden21
15 0 2

and nourishing them on their mother's milk 用母亲的乳汁滋养幼崽 until they reach independence. 直到其独♥立♥ But for these nervous little youngsters... 但对于这些紧张的幼崽们来说 that might take a while. 这可能需要一段时间 Most early mammals didn't have armor or size to...

But for these nervous little youngsters... 但对于这些紧张的幼崽们来说
Walden21
15 0 0

Giving birth to live young 生下活的幼崽 and nourishing them on their mother's milk 用母亲的乳汁滋养幼崽 until they reach independence. 直到其独♥立♥ But for these nervous little youngsters... 但对于这些紧张的幼崽们来说 that might take a while. 这可能需要一段时间 Most early mammal...

and nourishing them on their mother's milk 用母亲的乳汁滋养幼崽
Walden21
15 0 0

Crucial to the success of mammals 哺乳动物成功的关键是 was the evolution of parental care. 父母照护的进化 Giving birth to live young 生下活的幼崽 and nourishing them on their mother's milk 用母亲的乳汁滋养幼崽 until they reach independence. 直到其独♥立♥ But for these nervou...

Giving birth to live young 生下活的幼崽
Walden21
15 0 1

a handful of pups await her return. 许多幼崽在等待它的归来 Crucial to the success of mammals 哺乳动物成功的关键是 was the evolution of parental care. 父母照护的进化 Giving birth to live young 生下活的幼崽 and nourishing them on their mother's milk 用母亲的乳汁滋养幼崽 until they ...

was the evolution of parental care. 父母照护的进化
Walden21
15 0 2

for back at the den... 因为在巢穴里 a handful of pups await her return. 许多幼崽在等待它的归来 Crucial to the success of mammals 哺乳动物成功的关键是 was the evolution of parental care. 父母照护的进化 Giving birth to live young 生下活的幼崽 and nourishing them on their mother&#39...

a handful of pups await her return. 许多幼崽在等待它的归来
Walden21
15 0 0

she scoops them up with relish. 愉快地将白蚁挖起 And the more, the merrier... 越多越好 for back at the den... 因为在巢穴里 a handful of pups await her return. 许多幼崽在等待它的归来 Crucial to the success of mammals 哺乳动物成功的关键是 was the evolution of parental care. 父母照护的进...

Crucial to the success of mammals 哺乳动物成功的关键是
Walden21
15 0 2

And the more, the merrier... 越多越好 for back at the den... 因为在巢穴里 a handful of pups await her return. 许多幼崽在等待它的归来 Crucial to the success of mammals 哺乳动物成功的关键是 was the evolution of parental care. 父母照护的进化 Giving birth to live young 生下活的幼崽 and n...

she scoops them up with relish. 愉快地将白蚁挖起
Walden21
15 0 0

Like some of her prehistoric ancestors, 就像它的一些史前祖先一样 she, too, survives on a diet of tasty termites. 它也以美味的白蚁为食 Using her long, sticky tongue, 用长长的粘性舌头 she scoops them up with relish. 愉快地将白蚁挖起 And the more, the merrier... 越多越好 for back at t...

And the more, the merrier... 越多越好
Walden21
15 0 1

she, too, survives on a diet of tasty termites. 它也以美味的白蚁为食 Using her long, sticky tongue, 用长长的粘性舌头 she scoops them up with relish. 愉快地将白蚁挖起 And the more, the merrier... 越多越好 for back at the den... 因为在巢穴里 a handful of pups await her return. ...

for back at the den... 因为在巢穴里
Walden21
15 0 1

Using her long, sticky tongue, 用长长的粘性舌头 she scoops them up with relish. 愉快地将白蚁挖起 And the more, the merrier... 越多越好 for back at the den... 因为在巢穴里 a handful of pups await her return. 许多幼崽在等待它的归来 Crucial to the success of mammals 哺乳动物成功的关键是 wa...