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已上传0个录音 第950期:肚脐(2)
发布时间:2023-01-12 10:37   浏览:0次

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An umbilical cord is long and thick. It looks like a rope. It connects a forming baby to his mother. The umbilical cord of an unborn baby, or fetus, begins to form during his second month of life. The umbilical cord carries nutrients and life-giving substances from the mother to the fetus. Shortly after birth, a doctor or health care worker clamps the umbilical cord.
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