- 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 mammals didn't have armor or size to protect them...
多数早期哺乳动物 没有护甲来保护它们 - yet just like in today's forests...
但就像今天的森林中一样
But for these nervous little youngsters... 但对于这些紧张的幼崽们来说
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