unrewarding

Listening to it in its entirety is also fairly unrewarding.

把它完整地听下来后还是没多少收获。

柯林斯例句

Lectures often seem very formal and empty things; recitations generally prove very dull and unrewarding.

讲座给人的感觉常常是非常正式且言之无物; 背诵总是非常的枯燥且徒劳无益.

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Yet over the past year or two, I have found my obsession increasingly unrewarding.

但近一两年来, 我发现自己的这种执著已变得越来越不值得.

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