thankless

"thankless" Chinese translation ("thankless" in Chinese, "thankless" 中文翻译, "thankless"发音):

thankless

adj. 不感谢的,忘恩的,不知感恩的 [a ~ fellow 忘恩的家伙 a ~ task [job] 吃力不讨好的工作,徒劳而无赏的工作 ]