生存的绵延不是一个长度的问题，而是一个深度和密度的问题。
Other holidays repose upon the past; Arbor Day proposes for the future.
Digital therapeutics are not about replacing therapists, but about extending their reach and impact.
数字疗法不是为了取代治疗师，而是为了扩大他们的影响范围和效果。