fine-toothed comb

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a comb with teeth set close together
• Syn:
fine-tooth comb
• Hypernyms:
comb
2. a method of examining in minute detail
- he went over the contract with a fine-tooth comb looking for loopholes
• Syn:
fine-tooth comb
• Hypernyms:
examination, scrutiny