Go through something with a fine-tooth comb 仔细检查，彻底搜查
表达 “go through something with a fine-tooth comb” 或 “go over something with a fine-tooth comb（用细齿梳子仔细梳理某物）” 的意思是 “仔细检查、查看或彻底搜查某物”。
这个表达来源于治疗虱子时，人们用间隙密集的细齿梳子 “a fine-tooth comb” 刮虱子的做法。
Lisa’s work is always perfect and without any mistakes. She goes over every assignment with a fine-tooth comb before submitting it.
Our teacher told us we should go over last week’s chemistry notes with a fine-tooth comb before our next test. I think he was giving us a hint!
The police officers went through the crime scene with a fine-tooth comb looking for evidence.
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