expansion diffusion

例句：

1. 1. The company's expansion into new markets has been a success.
   该公司进入新市场的成功扩张。
2. 2. The expansion of the economy has led to increased employment opportunities.
   经济的扩张带来了就业机会的增加。
3. 3. The expansion of the internet has revolutionized the way we communicate.
   互联网的扩张已经改变了我们交流的方式。