扩展字符集

例句：

1. 1. The company plans to expand its operations in the new market.
   该公司计划在新的市场上扩展其业务。
2. 2.The team expanded their knowledge of the subject by reading more books.
   通过阅读更多的书籍，团队扩大了他们对主题的了解。
3. 3.The economy is expanding at a faster pace than expected.
   经济正在以比预期更快的速度扩张。