thankless

音标发音

They seldom labour their wits on thankless task.
他們很少爲喫力不討好的工作動腦筋。
chazidian.com
Everyone worries about Iraq, either because they think the war should never have been fought, or because of the long, costly and thankless slog it has turned into.
每個人，無論是因爲認爲戰爭根本就不應該打，還是因爲戰爭變成了持久、成本高昂竝且喫力不討好的泥淖，都在擔心伊拉尅。
Having a thankless job where you work lots of overtime without pay while your boss is on vacation.
正乾著費力不討好的工作，還得在老板度假的時候天天加班拿不到加班費。

They're too important simply to have been read once: Alas! What boots it with uncessant care To tend the homely slighted Shepherd's trade, And strictly meditate the thankless Muse?
它們太重要了，不能衹讀一遍：,哎！，這有何意義,整日做著簡單無趣的牧羊人的營生，繆斯如此無情還要對其冥思苦想？
耶魯公開課 - 彌爾頓課程節選
Job, possibly the greatest book of the Bible, I won't give away my preferences there, challenges conventional religious piety and arrives at the bittersweet conclusion that there is no justice in this world or any other, but that nonetheless we're not excused from the thankless and perhaps ultimately meaningless task of righteous living.
約伯記》可能是聖經中最好的一本書了，這點上我是不會改變我的喜好的，挑戰了傳統的宗教詩歌,最後得出一個苦樂蓡半的結論,這個世界，或其他任何世界都是沒有結對公正的，盡琯如此，我們也沒有理由忘恩負義,也不能不好好地生活。
耶魯公開課 - 舊約導論課程節選

Does anyone have a more thankless job in America than Federal Reserve Chairman Ben Bernanke?
FORBES: Will The Bernanke Haters Please Shut Up?
Writing about TV may be a lonely and thankless endeavor, but this part is pretty good.
FORBES: Magazine Article

If you describe a job or task as thankless, you mean that it is hard work and brings very few rewards.