But if we let go, and let the thing we need slip away for a while, we might find that we don't really need it at all.
但如果我们放手，让需要的东西消失片刻，我们可能会发现自己根本不需要那样东西。
When we let go of the present, which we have in our power, and look to the future, which depends on chance, we relinquish a certainty for an uncertainty.
当我们让当下流逝——我们所能掌握的，去朝向未来——依靠机会的，我们是用一个确定的换取一个不确定的。
If we let go the elastic energy as the spring passes through the equilibrium point is converted to kinetic energy.
如果我们释放弹簧，那么弹簧经过平衡点时，弹性能就转变为动能。
If we let go, the elastic energy, as the spring passes through the equilibrium point, is converted to kinetic energy.
如果我们释放弹簧，那么弹簧经过平衡点时，弹性能就转变为动能。
If we let go, the elastic energy, as the spring passes through the equilibrium point, is converted to kinetic energy.
如果我们释放弹簧，那么弹簧经过平衡点时，弹性能就转变为动能。
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