"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"
例句
She is the most vocal and pertinacious of all the critics of the policy.在所有的政策批评家中，她是陈词最多而且最为固执的。
His style of argument in meetings is not so much aggressive as pertinacious.他在会议上的辩论态度并非锋芒逼人而是坚持己见。
