Occasionally, I find even book-length manuscripts, unsolicited—which I return to the sender with a little blue slip Thank you for your submission.

偶尔我会发现篇幅长如书本、“不请自来”的稿件——我一样会带着印有“谢谢你的来稿”字样的纸条来到寄件箱前。

youdao

In fact, negative thoughts sent to you by others will rebound from your aura with the same force with which they were sent out, and seeking the lines of least resistance, will return to the sender.

事实上，别人对你发出的负想法，将以相同的力道被你的光气场弹开，依最小阻力路径行进，而回到发出想法的人。

youdao

In such a case, the gateway Proxy service would assume the role of the ultimate receiver and return an empty result (not a fault) to the sender.

在这样的情况下，网关代理服务将假设为最终接收者角色，并且返回一个空结果(不是一个错误)给发送者。

youdao

Although the sums involved are very small in terms of its annual turnover, the Royal Mail says the proceeds are used to recoup part of the cost of its National Return Letter Centre based in Belfast, which aims to return undeliverable items to the sender wherever possible.

BBC: How much does Royal Mail make from undelivered parcels?