请先在这里验票再进去。

Qǐng xiān zài zhèlǐ yànpiào zài jìnqù.

Please check your ticket here first before going in.

老师想通过这个小实验来检验我们的想法。

Lǎoshī xiǎng tōngguò zhè gè xiǎo shíyàn lái jiǎnyàn wǒmen de xiǎngfǎ.

The teacher wants to test our ideas through this small experiment.