developmental milestone

基本解释

Almost all children lie. It is a sign that they have reached a new developmental milestone.
孩子不会转变成病理学意义上的“撒谎成性”，几乎所有孩子都说谎，但这也是孩子达到一个新层次发展的里程碑。
The emergence of theory of mind in children is a vital developmental milestone; some psychologists think that a failure to develop a theory of mind is a central component of autism.
儿童出现心理理论，是发展过程中的重大里程碑。有些心理学家认为，不能成功发展出心理理论，是孤独症的主要特征。
The scientific concept of development is an innovative theory of development in contemporary China, the fourth milestone in the developmental theories since the founding of New China.
科学发展观是当代中国富有创造性的发展理论，是新中国成立以来的第四代发展观。

One such technology — the V-22 tiltrotor — passed a critical developmental milestone last week, largely clearing the way for its entry into the Marine Corps and Special Forces inventories.
CENTERFORSECURITYPOLICY: Redeploying our forces to win World War IV