1·Why on earth should their beds be properly aired, seeing that they left them in such a thankless hurry?
既然他们是这样匆匆忙忙地走了，连吃力不讨好也不知道，为什么要帮他们把床铺晒干呢？
2·They seldom labour their wits on thankless task.
他们很少为吃力不讨好的工作动脑筋。
3·Raise your hand for the thankless job nobody else wants to do.
即使是那种没人愿意干的吃力不讨好的活儿也要主动担当。
4·The waitress, landed with the thankless task of defending pea and ham soup to one of Britain's most outspoken vegetarians, can only shrug and look mortified.
而这名女侍应呢，她被安排完成这项吃力不讨好的任务要在全英国其中一个最直率的素食主义者面前为这碗豌豆火腿汤辩解，她只好羞愧地耸耸肩。
5·It's also about the thankless hours of grading, designing or redesigning courses, and preparing materials to still further enhance instruction.
它也是吃力不讨好地把时间用在分级、设计和重新设计课程，并为进一步增强学习效果准备材料。
1·Thankless people fall in trouble, can't be saved.
忘恩的人落在困难之中，是不能得救的。
2·Those thankless, fall in trouble, can't be saved.
那些忘恩的人，落在困难之中，是不能得救的。——伊索。