expansion stuffing box

例句：

1. 1. The company is expanding its operationsin the new market.
   该公司正在新市场扩大其业务。
2. 2. The economy is expanding ata faster pace than expected.
   经济的增长速度比预期的要快。
3. 3. Theteam is working on anexpansion project for the city's public library.
   团队正在为该市公共图书馆进行一项扩展项目。