perseveringly detail坚忍不拔地
study Perseveringly坚强的意志和持之以恒
Works Perseveringly笃行
apply oneself perseveringly to锲而不舍地致力于
work hard and perseveringly艰苦奋斗;大干苦干
study assiduously and perseveringly持之以恒地刻苦学习
study y assiduously and perseveringly持之以恒地刻苦学习