1. With the economy developing rapidly, I’m glad to see our city is taking on a new look.

随着经济的快速发展，我非常高兴地看到我们的城市呈现出新的面貌。

2. Over the past twenty years or so, great changes have taken place in our life.

在过去的二十多年里，我们的生活发生了巨大的变化。