reserve level

例句：

1. 1.The government has reserved a large portion of the land for future development.
   政府已预留大片土地用于未来开发。
2. 2. She reserved her seat for someone who was late.
   她为迟到的人预留了座位。
3. 3. The company reserves the right to suspend or cancel any event that may affect its operations.
   公司有权暂停或取消可能影响其运营的任何活动。