labor of love
US /ˈleɪbər əv lʌv/
UK /ˈleɪbər əv lʌv/

1.
愛的勞動, 心血結晶
a task or project undertaken for pleasure, not for money or reward
:
•
Restoring this old car has been a real labor of love for him.
修復這輛舊車對他來說真是一項愛的勞動。
•
Writing this book was a labor of love, taking years to complete.
寫這本書是一項愛的勞動,花了數年才完成。