expansion U-bend

例句：

1. 1.The company's expansion has led to a significant increase in sales.
   公司的扩张导致销售额显著增长。
2. 2. The team is expanding its operations into new markets.
   团队正在将业务扩展到新的市场。
3. 3. The government's expansion of the border has raised concerns about security.
   政府扩大边境引发了对安全的担忧。