This is really a thankless task.

这真是一项吃力不讨好的工作.

BEING a Middle East peace envoy is a thankless task.

做一个中东和平使者是一项不讨好的任务.

Roosevelt was reluctant to undertake the thankless task.

罗斯福不大愿意承担这种徒劳无益的任务。

On a trip to London with Jobs, Ive had the thankless task of choosing the hotel.

在与乔布斯的一次伦敦之行中，艾弗负责挑选酒店，这是份吃力不讨好的差使。