“苦干的”用英语怎么说？

我实在佩服她不屈不挠的乐观态度和苦干的精神.I really admire her indomitable optimism and can - do spirit.天才是避免苦干的能力.Genius is the capacity of evading hard work.他强调了苦干的必要.He emphasized the need for hard work....