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 .
（檢查或查看）仔細地，徹底地
We have gone through the evidence with a fine-tooth comb . 我們已經仔細地檢查過証據。 返回 fine-tooth comb