努力只会说“hard work”太low了

1. assiduous 刻苦的;勤奋的;

2. diligent 勤勉的;用功的;

3. industrious 勤劳的;勤奋的;

4. laborious 辛勤的;努力的;

5. indefatigable 不倦的;坚持不懈的;

6. operose 勤勉的;用功的;

7. sedulous 勤勉的;刻苦的;

8. painstaking 勤恳的;刻苦的。