extend the expiration date

例句：

1. 1. The company plans to extend its reach into new markets.
   公司计划将其业务扩展到新的市场。
2. 2. The train will extend for another hour before arriving at the station.
   火车将在到达车站前再行驶一小时。
3. 3.The deadline for submission has been extended due to unforeseen circumstances.
   由于不可预见的情况，提交截止日期已被延长。