permanent twist

例句：

1. 1. The company's commitment to environmental sustainability is a permanent fixture in its operations.
   该公司对环境可持续性的承诺是其运营中的一个永久性特征。
2. 2.The decision to move to a new city was a permanent change in our lives.
   搬到一个新城市的决定是我们生活中一个永久性的改变。
3. 3.The permanence of the law means that it will remain in effect for an extended period.
   法律的永久性意味着它将在较长时间内保持有效。