充分发育的；（智力或体力）成熟的

A. fully grown or developed mentally or physically

充分发育的血管对氧中毒是不敏感的.

Fully developed blood vessels are not sensitive to oxygen toxicity.

干细胞有点儿像一个婴儿，还未充分发育但潜能巨大。

A stem cell is a bit like an infant, undeveloped but possessing great potential.

研究发现，塞卡病毒会导致出生缺陷如小头畸形，即当孩子生下来会出现异常小头以及未充分发育的大脑。

Studies have found that the Zika virus is responsible for birth defects such as microcephaly, which is when children are born with an abnormally small head and an underdeveloped brain.