time on their hands

• n. 闲暇(闲空)

time on their hands的用法和样例：

例句

用作名词 (n.)

1. Reading occupies most of my free time.
   阅读占去了我大部分的闲暇时间。
2. What do you like doing in your spare time?
   你在闲暇时喜欢做什么？