这位退休教师以校友身份重返校园，受到了返校者的热烈欢迎。

The retired teacher came back to campus as an alumnus and received a warm welcome from the ___returners.

他们的回攻手在接球后冲出了30码。

Their ___returner ran 30 yards after catching the punt.

那位顾客是个常客，经常来店里退换商品。

That customer is a frequent ___returner, often bringing items back to the store.