毋须私情，不需回报。

No personal feelings, without return.

youdao

科学家需要在期刊上发表他们的研究，所以他们将提供文章，而不需要金钱回报。

Scientists need journals in which to publish their research, so they will supply the articles without monetary reward.

youdao

洗手不需要花费很多时间或者很大的力气，但是它在预防疾病方面提供了巨大的回报。

Hand washing doesn't take much time or effort, but it offers great rewards in terms of preventing illness.

youdao