fine-tooth comb

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˌfine-tooth ˈcomb noun  go through/over something with a fine-tooth comb CAREFULto examine something very carefully and thoroughly 仔细检查；彻底查看 The police went over the scene of the crime with a fine-tooth comb. 警方彻底检查了犯罪现场。

Examples from the Corpus

fine-tooth comb• I want to take a handful of good men and go over it with a fine-tooth comb.• I went over it with a fine-tooth comb.• Your lads have been over this place with a fine-tooth comb.

ˌfine-tooth ˈcomb nounChineseSyllable  

very something carefully and thoroughly to Corpus examine

fine-tooth comb
ˌfine-tooth ˈcomb noun
go through/over something with a fine-tooth comb to examine something very carefully and thoroughly:
    The police went over the scene of the crime with a fine-tooth comb.

fine-tooth combBrE /ˌfaɪn tuːθ ˈkəʊm/ 🔊NAmE /ˌfaɪn tuːθ ˈkoʊm/ 🔊 (also ˌfine-toothed ˈcomb) nouna comb in which the pointed parts are thin and very close together 细齿梳子●go over/through sth with a fine-tooth/fine-toothed combto examine or search sth very carefully 十分认真地检查；非常仔细地搜查