strenuous
- adj. 紧张的；费力的；奋发的；艰苦的；热烈的
英英释意
- 1. characterized by or performed with much energy or force;
- "strenuous exercise"
- 2. taxing to the utmost; testing powers of endurance;
- "his final, straining burst of speed"
- "a strenuous task"
- "your willingness after these six arduous days to remain here"- F.D.Roosevelt