a clean bill of health idiom informal
身体健康证明
a decision by a doctor that someone is healthy
He's been given a clean bill of health by the doctor. 他拿到了一份医生出具的健康证明。
合格证明;安全证明
a decision by someone in authority that a particular thing is in good condition
Of 30 countries inspected for airline safety, only 17 received a clean bill of health. 在对30个国家的航班安全性检查中，只有17个国家获得了安全证书。