自由时间 
spare time 
Freizeit like: spare time → →
1931
She wanted to know what I did in my spare time. ☊ 
Cô ấy muốn biết tôi làm gì lúc rảnh rỗi. ☊ He's studying music in his spare time. ☊ spare ☊
How do you spend your spare time? ☊ spend ☊
She doesn't have much free/spare time. ☊ time ☊