我钦佩他们的苦干精神。
I admire their hard-working spirit .
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 .
他的成功充分体现了他的勤劳苦干和敬业精神。
His success has been a tribute to hard work , to professionalism
苦干精神苦干精神苦干精神