菲比是一个心智上成熟的孩子，她没有像霍尔顿一样和世界有那么大的割裂感，

Phoebe is a mentally mature child. She does not have the same sense of separation as the world like Holden. She seems to be in a more harmonious relationship with the world. These may be what Holden wants Something to protect and retain.

Phoebe is a mentally mature child who doesn't have as much of a separation from the world as Holden, and she seems to be in a more harmonious relationship with the world, something That Holden may be eager to protect and keep.

Phoebe is a mentally mature child. She doesn't have the same sense of separation with the world as Holden. She seems to be able to be in a more harmonious relationship with the world, which may be exactly what Holden is eager to protect and keep.<br>