a labour of love的用法和样例：
- Enthusiasm has rendered this biographical task a labour of love.
- Building the model railroad was a labour of love for the retired engineer.
- What he did was a labour of love.
- She would be hurt if you tried to pay her for that work; she intended it as a labour of love.
- I don't mind arranging the flowers for the church every Sunday; it's a labour of love.