a clean bill of health
US /ə kliːn bɪl əv helθ/
UK /ə kliːn bɪl əv helθ/

1.
健康证明, 良好状况证明
a statement or certificate that someone is healthy or that something is in good condition
:
•
After a thorough check-up, the doctor gave him a clean bill of health.
经过全面检查,医生给他开具了健康证明。
•
The car passed the inspection and received a clean bill of health.
这辆车通过了检查,获得了良好状况证明。