in the development of each ear

例句：

1. 1. In the development of each ear, we need to pay attention to the details of the sound.
   在每个耳朵的发展过程中，我们需要关注声音的细节。
2. 2. During the development of each ear, children should be encouraged to explore their senses.
   在每个耳朵的发展过程中，应该鼓励孩子们去探索他们的感官。
3. 3. The development of each ear is crucial for a child's growth and learning.
   每个耳朵的发展对于孩子的成长和学习都至关重要。