adj.意志的，凭意志的

His decision to quit smoking was entirely volitional.
他的决定戒烟完全是出于自愿。
The patient's voluntary movements were limited due to the stroke.
患者的随意运动因中风而受限。
She made a volitional choice to pursue her passion for music.
她出于自己的意愿选择了追求对音乐的热情。
In ethics, actions are considered moral if they are performed with a volitional state of mind.
在伦理学中，如果行动是出自意志状态，则被认为是道德的。
The athlete demonstrated great volition in overcoming his injury and returning to competition.
这位运动员在克服伤病并重返赛场的过程中展现了巨大的意志力。
Their commitment to environmental conservation is not just lip service; it's a volitional lifestyle change.
他们对环保的承诺并非口头上的应付，而是实实在在的生活方式改变。
The defendant argued that his confession was not voluntarily given but coerced by police tactics.
被告人辩称其供述并非自愿给出，而是受到警方手段的逼迫。
Learning a new language requires sustained volition and dedication over an extended period.
学习一门新语言需要长期坚持的意志和投入。
Despite the hardships, he persevered through sheer volition and determination.
尽管困难重重，他凭借坚定的决心和强大的意志力挺了过来。
The child displayed impressive volitional control in resisting the temptation of the candy jar.
那个孩子表现出令人赞叹的意志控制力，抵制住了糖果罐的诱惑。