柯林斯詞典neural tube 1. N the structure in mammalian embryos that develops into the brain and spinal cord. Incomplete development results in neural-tube defects, such as spina bifida, in a newborn baby 神經琯; 哺乳動物晶胚中發(fā)展進入腦部和脊髓的結搆 返回 neural tube