常见例句用作名词 (n.)Downgrading your firmware requires special equipment.降级的固件需要特殊设备。For those now staying at less expensive properties, the downgrading brings some discomforts.对那些现在改住较便宜饭店的高阶主管来说，饭店降级使得住起来不再那麽舒服。 返回 downgrading