painstaking

• Because i feel painstaking , i can think , i consider a change
  我会思考因为我觉得辛劳，我想改变。
• After years of painstaking research , a cure was found
  经过多年的辛勤研究，终于找到了治疗方法。
• His painstaking to attain his goal in life is praiseworthy
  他为实现人生目标所下的苦功是值得称赞的。
• Harry is a painstaking student
  哈里是个肯下苦功的学生。
• He composed his musical works day after day in painstaking fashion
  他日复一日呕心沥血地从事着音乐创作。
• What they have achieved results from their hard ( = painstaking ) work
  译：他们取得的成果是由于他们的刻苦努力。
• He is painstaking with his work
  他对工作尽心。
• The mastery of acupuncture is not easy and requires painstaking effort
  掌握针灸不是件容易的事情,非下苦工夫不可
• The mastery of language is not easily and it requires painstaking
  语言这东西不是随便可以学好的，非下苦功夫不可。
• Who knows how much painstaking effort the skillful craftsmen made
  谁能知道有多少个能工巧匠的心血与智慧在此汇聚？