1. 费力的;繁重的;艰苦的
A strenuous activity or action involves a lot of energy or effort.
strenuouslyExercising too much or too strenuously is just as bad as not doing it at all...
运动过量或过度和不运动一样有害身体健康。
The company concerned has strenuously denied the accusations.
有关公司极力否认这些指控。
