公司将旧设备降级用于培训新人。

The company ___relegates the old equipment to training new employees.

由于表现不佳，这支球队被降级到低级别联赛。

Due to poor performance, the team was ___relegated to the lower league.

公司把旧设备降级为备用设备。

The company ___relegates the old equipment to backup status.