Definition
This idiom is used to express that one should be content with what they have or have been offered, rather than demanding more or something superior.
得寸进尺（表示不应该贪得无厌）
You've already got a great job; what more do you want - jam on it?
你已经有了很棒的工作；你还想要什么——果酱吗？
They've given you so much help; what more do you want - jam on it?
他们已经给了你很多帮助；你还想要什么——果酱吗？
I have tried my best; what more do you want - jam on it?
我已经尽力了；你还想要什么——果酱吗？