To quibble over words and phrases, focusing excessively on minor points of wording rather than the actual meaning or substance; to be pedantic.
在小组讨论中，他总是喜欢嚼字咬文，结果反而让大家忽略了核心问题。
During the group discussion, he always liked to quibble over words and phrases, which consequently made everyone overlook the core issue.
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