Why don't you check the Lost Property Office?

您为何不去失物招领处询问呢？

Is your computer game at Lost Property Office?

你的电脑游戏在失物招领处吗？

Go and check the Lost Property Office. Maybe you can find it.

去失物招领处问问，或许你会找到。

I lost my umbrella, but claimed it at the lost property office.

我把伞丢了，后来在失物招领处认领回来了。

Perhaps he is thinking about getting a better job, a more interesting job than being a clerk in a lost property office.

也许他是在想得到一份更好的工作，一份比失物招领处的小职员更有趣的工作。