assiduous
adjective formal uk/əˈsɪdʒ.u.əs/ us/əˈsɪdʒ.u.əs/
专心致志的;兢兢业业的;勤勉的
showing hard work, care, and attention to detail
assiduous research/efforts 锲而不舍的研究／努力
an assiduous student 勤奋的学生
The government has been assiduous in the fight against inflation. 政府一直在不遗余力地遏制通货膨胀。