doer
/ˈduːə(r)/noun
1- the person who does something做某事的人：
the doer of the action.
这个行动的执行者。
1.1
- a person who acts rather than merely talking or thinking实干家：
I'm a doer, not a moaner.
我是个实干的人, 不是耽于抱怨的人。
1.2
- （亦作hard doer）Austral./NZ a person who is admired because of their courage, toughness, and adventurousness〈澳/新西兰〉（因勇气、坚韧和大胆而受人钦佩的）硬汉子。