fine-tooth comb(idm 习语) (go over, through, etc sth) with a fine-tooth comb (examine sth) closely and thoroughly 细心地, 彻底地（检查某事物） Police experts are sifting all the evidence with a fine-tooth comb. 警方专门人员仔仔细细地审查所有证据.
牛津英汉双解词典