umbilical cord

umbilical-cord的词性：
n.（名词）

1. Anatomy The flexible cordlike structure connecting a fetus at the navel with the placenta and containing two umbilical arteries and one vein that transport nourishment to the fetus and remove its wastes.
【解剖学】 脐带：在胎儿的肚脐部分和胎盘相连并含有两条脐动脉和一条脐静脉的有弹性的带状结构。脐静脉的作用是输送养料并运走废料

2. Something likened to this structure; a source or means of support or sustenance:
和这个结构相连的东西；物质或支持方式的来源：

“All the umbilical cords of dependency still exist because the public wants them”(David A Stockman)
“所有不独立的脐带仍然存在，因为公众需要它们”(戴维A斯托克曼)

3. Aerospace
【太空学】

4. Any of various external electrical lines or fluid tubes that supply a rocket before launch.
操纵缆：在发射之前供应火箭的任何外部电缆或液体管道

5. The line that supplies an astronaut with oxygen and in some cases with communications while outside the spacecraft.
空间生命管线：宇航员在宇宙飞船之外时，给宇航员供应氧气并在某些时候供交流信息的管道