你为什么不求回报地帮助他做这么多事？
How come you helped him do so many things without asking for any reward?
“奉献”原指恭敬地交付、呈献，即不求回报地付出。
The original meaning of dedication is to respectfully give or submit without asking for a reward.
父母已经不求回报地为我们做了这么多事情。
Our parents had already done so many things for us without any return.
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