conjugate stage

例句：

1. 1. The conjugate stage is a critical period in the development of a language.
   共轭阶段是语言发展中的一个关键时期。
2. 2. During the conjugate stage, the child's brain is still developing.
   在共轭阶段，孩子的脑部仍在发育。
3. 3. The research on the conjugate stage has provided valuable insights into language acquisition.
   关于共轭阶段的研究表明了语言习得的宝贵见解。