fine-tooth comb

剑桥词典

 with a fine-tooth comb

If you go through something with a fine-tooth comb , you examine it in great detail and with great care .
（检查或查看）仔细地，彻底地
We have gone through the evidence with a fine-tooth comb . 我们已经仔细地检查过证据。 返回 fine-tooth comb