Right. To do your bit and to pay back that.

对。尽自己的一份力回馈社会。

Then you leave and come back a month later to do your bit and you just have such horrible FOMO.

然后你离开，一个月后回来做你的事，你就陷入了如此可怕的 FOMO 状态。

" You were so keen to help the Order, " said Mrs Weasley, " you can do your bit by making Headquarters fit to live in."

“你们这么热心想帮助凤凰社，”韦斯莱夫人说，“把指挥部打扫得能够住人也算是你们的一份贡献嘛。”