求clean bill of health的英文解释

clean bill of health [简明英汉词典]
n.无传染病的健康证明书
clean bill of health:
n.无疫证书(无罪的证明书)
名词clean bill of health:
1.an assurance that someone is healthy or something is in good condition
举例说明:He doubt he has illness,but the doctor give him a clean bill of health.他怀疑自己有病,但医生给他一个无疫证书.

clean bill of health 是固定词组.
n.无传染病的健康证明书
WHO gives indoor use of DDT a clean bill of health for controlling malaria

干净卫生条例