Between these thin-obsessed co-workers, it becomes almost a competitive sport to see who can consume the least amount of food.
这些一门心思想着如何变瘦的女生正在进行一场激烈的角逐，看谁吃的东西最少。the single-mindedly ambitious people have done to ambition--given it a bad name.
一门心思野心勃勃的人也败坏了雄心的名声。She did her work with the thoroughness of a mind which reverse details and never quite understands them.
她一门心思地工作，对细枝末节都郑重其事，但并不完全理解。His pain at her failure to meet or write him rapidly increased as he devoted himself to this subject.
他一门心思地想着这个问题，想到她既没来和他见面，也没写信给他，使他心中痛楚遽增。You can have anything you want to be, do anything you set out to accomplish if you hold to that desire with singleness of purpose.
你能成为你想成为的任何人，做你计划完成的任何事，只要你能一门心思地坚持下去。Just think, if I had to walk a little obsessed with learning about the spirit of the blind, how to come down and do so today?
试想，如果我以前稍微学一下盲人一门心思走路的精神，又何至落得今日这般潦倒呢？As I was full occupied with my own thinking, I did not hear the teacher calling my name.
我一门心思想着事，没有听到老师叫我的名字。He devoted himself to passion projects that he felt could make the biggest impact on the company .
他一门心思扑在那些他认为能够对公司产生最大影响的激情项目上面。If returns on capital are high (and much higher than the cost of capital), businesses ought to be falling over themselves to invest.
如果资本的回报高（大大高于资本成本），企业就应该一门心思加大投资。