A petty official or clerk skilled in drafting or processing legal and administrative documents, often meticulous about wording or technicalities.
他虽然只是个小小的刀笔吏，却因精通公文和法律条文，常常能发现其中的细微之处。
Although he was just a petty clerk, he often discovered subtle nuances due to his deep familiarity with official documents and legal clauses.
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