permanence
noun [ U ] uk/ˈpɜː.mə.nəns/ us/ˈpɝː.mə.nəns/ (formal permanency)
持久（性）;永久（性），永恒（性）
staying the same or continuing for a long time
A loving family environment gives children that sense of stability and permanence which they need. 充满爱意的家庭氛围会给孩子带来他们所需的稳定感和安定感。