Today he'd just drop the books off in the outside return box, but it was locked.

今天，他想只把书放在外面的归还盒里，但它是锁着的。

youdao

So you're implementing this black box, and if its purpose in life is to actually return a value, you have to tell the compiler what kind of value to expect, and this is going to have ripple effects.

你在实现这个黑盒子，如果它的目的是,返回一个值，你必须告诉编译器你期望的是什么类型的值，这个将是一个连锁反应。

哈佛公开课 - 计算机科学课程节选

In an inflationary age it no longer means anything to look at a quarterly statement to see if there is a plus sign or a minus sign next to the return box.

FORBES: Why Analysts Can't Properly Value Stocks And Bonds

She loves fine linens and recently traded the Connaught Hotel in London a drawing in return for a box of its sheets.

WSJ: Reformed Bad-Girl Artist Tracey Emin

Returns are easy and there is a return form in the box with the package.

FORBES: Black Friday/Cyber Monday Battle Plans