Is that your watch in the lost and found box?

你的手表在失物招领箱里吗

Is the key in that Lost and Found box yours?

失物招领盒里的那把钥匙是你的吗，更上一层楼！

The large box at the hotel's lost and found desk contained a farraginous assortment of hats, umbrellas, cell phones, and other personal items.

那个在酒店失物招领处的大箱子里混杂着各种帽子，伞，手机和一些其他私人的东西。

Is this your pen in the found and lost box?

这支在失物招领箱里的笔是你的么？