overeagerness       
noun [ U ] (also over-eagerness) uk/ˌəʊ.vərˈiː.ɡə.nəs/ us/ˌoʊ.vɚˈiː.ɡɚ.nəs/
 积极过分
the state of being too eager to do or have something
  Something about her suggested a slight overeagerness to please.
 Over-eagerness was the main danger facing the team. 积极过分是团队面临的主要危险。 
  - More examples
- In our overeagerness to interpret the results, we missed the most important finding.
- She preferred his shyness to the over-eagerness of other young men.
- The typical over-eagerness of your twenties fades as you get older.
- Bravado and overeagerness are not appealing qualities in job applicants .
- Officers' over-eagerness to search the property without a warrant made it impossible to bring drugs charges.