医生建议剖腹产时，正常分娩是不可能的，当婴儿的头部位置不下来，这是无法转动头部。

A doctor recommends a C-section when normal delivery is not possible, when the baby's head is not positioned down and it is not possible to turn the head.

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结果表明无传染病的正常孕妇分娩时的脐血，可作血源供临床使用并能用于治疗多种原因引起的贫血。

The results showed that the umbilical cord blood of pregnant woman who did not suffer from infectious diseases was not only used by clinic as blood fountain but also used to treat various-anemia.

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