Dreye权威释义 | strenuous

a.

费劲的，费力的
Is swimming a strenuous exercise?
游泳是很费力的运动吗？
奋发的；强烈的，激烈的
He made strenuous efforts to improve his reading.
他奋发努力提高阅读能力。
紧张的；艰苦的；繁重的
It takes many years of strenuous training to be an outstanding athlete.
要成为一名杰出的运动员需要多年艰苦的训练。