a low level of unemployment的用法和样例：
- Although the tit-for-tat games forever, but this time the two have a lot of common views, such as those in the low level of unemployment in the league's coach of the treatment.
- Capital will shrink to fit a lower level of activity.
- The other half of the brain stays awake at a low level of alertness.
- Specifies a low level of security for policy file mapping.