"I can't make a decision" 是表示 "我不能做出决定" 的常用说法。
来源：这是一个经典的英语表达，主要用于商务、学术、工作等场合。
例句：
"I'm really struggpng to make a decision on which car to buy." ("我真的很难决定买哪辆车。")
"I can't decide whether I should take the job or not." ("我不能决定是否应该接受这份工作。")
"She couldn't make a decision about what to wear to the party." ("她不能决定穿什么去参加聚会。")