They are usually tall wooden walls with hard plastic handholds set at various angles.

通常是高大的木墙,设置各种不同角度的硬质塑料岩点.

These are the principal spiritual handholds I have found to possess enduring value. They offer both an exciting challenge and a calm assurance. They are the things I believe.

这些便是我所发现的精神支撑点，它们具有永恒的价值。它们给予我们的不仅是刺激的挑战，还有令人安心的承诺。这就是我信仰的一切。