v.坚忍,坚持( persevere的过去式和过去分词 );
例句:
He persevered in his studies [ with the treatment ].
他坚定不懈地研究 [ 治疗 ].
He persevered in his studies.
他坚持不懈地研究.
Student B: He is so persevered.
学生乙: 真有毅力!