贪得无厌 [- dé wú yàn]be insatiably avaricious; as greedy as a wolf; be greedy of gain; be insatiably greedy; flay [skin] a flint; skin a flea for the [its] hide; voracious; with one's avarice knowing no bounds:
•¶ 他们贪得无厌, 你永远无法满足他们。 Their avarice knows no bounds; you can never satisfy them.