strenuous
英 ['strenj??s]
美['str?nju?s]
- adj. 緊張的；費力的；奮發(fā)的；艱苦的；熱烈的
英英釋意
- 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