"In someone's leisure time" 可以用 "during someone's free time" 来表示。
来源：Leisure time 是英语中常用的词汇，指的是人们的休闲和娱乐时间。
例句：
"What do you pke to do during your free time?"
(你在闲暇时间喜欢做什么？)
"She enjoys reading books during her leisure time."
(她喜欢在闲暇时间读书。)
"He spends his free time playing video games."
(他在闲暇时间玩电子游戏。)