空儿

• spare time
• free time

例句

1. 你有空儿去吃午饭吗？
   Are you free for lunch?
2. 我刚煮好咖啡--你能抽空儿喝点儿吗？
   I've just made some coffee have you time for a quickie?
3. 有空儿再到我们这儿来坐坐。
   Come and see us again soon.