\\\"dogged persistence\\\"
\\\"dour determination\\\"
\\\"the most vocal and pertinacious of all the critics\\\"
\\\"a mind not gifted to discover truth but tenacious to hold it\\\"
\\\"men tenacious of opinion\\\"
造句
She is the most vocal and pertinacious of all the critics of the policy. 在所有的政策批評家中，她是陳詞最多而且最為固執的。
His style of argument in meetings is not so much aggressive as pertinacious. 他在會議上的辯論態度并非鋒芒逼人而是堅持己見。