go over/through something with a fine-tooth comb
US /ɡoʊ ˈoʊvər/θruː ˈsʌmˌθɪŋ wɪð ə faɪn-tuːθ koʊm/
UK /ɡoʊ ˈoʊvər/θruː ˈsʌmˌθɪŋ wɪð ə faɪn-tuːθ koʊm/

1.
仔细审查, 彻底检查
to examine something very carefully, looking for mistakes or problems
:
•
The auditors will go over the accounts with a fine-tooth comb.
审计师将仔细审查账目。
•
We need to go through the contract with a fine-tooth comb before signing it.
在签署合同之前,我们需要仔细审查合同。