| 释义 |
umbilical cord
noun
1.
a. : a cord arising from the navel that connects the fetus with the placenta and contains the two umbilical arteries and the umbilical vein
b. : yolk stalk
2. : a cable conveying power to a rocket or spacecraft before takeoff; also : a tethering or supply line (as for an astronaut outside a spacecraft or an aquanaut underwater) |