这是什么东西?

Zhè shì shénme dōngxi?

What is this stuff?

我终于找到我想要的东西了。

Wǒ zhōngyú zhǎodào wǒ xiǎng yào de dōngxi le.

I finally found the things I want.

你的包里有那么多东西！

Nǐde bāo lǐ yǒu nàme duō dōngxi!

Your bag has so much stuff!