With a small, advanced brain, long arms, long legs and an advanced pelvis, Australopithecus sediba is described as probably a transitional species between Australopithecus Africanus and Homo habilis.
有一个小小的突出的脑袋，长长的手臂和腿以及突出的骨盆，根据描述古猿sediba很有可能是古猿Africanus和能人之间的过渡性物种。
Then lift the lower back ribs away from the pelvis to keep the lower spine as long as possible.
然后提起后侧肋骨的下部离开骨盆并保持脊柱下部尽可能地长。
A long labor could signal that the baby is having trouble fitting through the mom's pelvis.
产程长有可能意味着胎儿难以进入母亲的骨盆。
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