表达a clean bill of health有两层含义：第一，它可以指大夫告知或给某人开具身体健康情况好的证明，这层含义和医疗健康有关；第二，它还可以引申为表明、告知某企业的运营情况好，用来描述其规章规范、安排等合理。大家常说give someone or something a clean bill of health，或者someone or something is given a clean bill of health。
例句
After a full medical test yesterday I was given a clean bill of health, so Im fit to be on the team this weekend.
我昨天同意了全方位体检之后，大夫给我开了身体健康的证明，所以我这周末就能重新回到团队中去了。
All the beaches on the south coast have been given a clean bill of health this summer.
南海岸所有沙滩的环境今年夏季都已被认定为合格。
The company made improvements1 to its safety regulations2 and was given a clean bill of health.
该公司在改变了其安全规定后获得了合格运营证明书。