下决心：对某事做出决定。
下定决心：对某事下定决心。
自己决定：自己做出决定。
下定决心
... make up for弥补,补偿,化装,扮演 make up one's mind下决心 make up to接近,巴结,奉承,向(女子)求爱 ...
... Adapt sth. to sth. 使什么适应什么/动词词组 Make up one's mind 下定决心/动词词组 Once and for all 一劳永逸地/副词词组 ...
... make up for 补偿,弥补 make up one's mind 决定,下决心 make wonders 创造奇迹 ...
... make a face 做鬼脸 make up one's mind 决心 make bed 铺床 ...
下决心，决定
Irresolution means reluctance or an inability to make up one's mind.
优柔寡断指犹豫不决，举棋不定不愿或不能决定。
The main directions dissertation of first section introduce remarks section make up one's mind and logical setup of article.
第一章导论部分主要说明论文立意并介绍文章的逻辑体系。
Look upon this story as a means of limbering up one's senses, one's attitude and one's mind to make them pliable and receptive.
这个故事可以让人的知觉、态度和心智变得柔韧、灵活和敏感，更容易接受新的事物。
Now this isn't the first time in this course that I've paused over a moment at a crossroads where you can't possibly take both paths but where it is obviously very, very difficult to make up one's mind.
现在是这个课程中第一次,在一个分叉路口停下,我们不可能同时走两条路,但是这也显然是非常难以决定的一个地方。
文学理论导论课程节选 : 耶鲁公开课