一旦被发现撒谎，你以后说的话就很难再让人相信了。

Yídàn bèi fāxiàn sāhuǎng, nǐ yǐhòu shuō de huà jiù hěn nán zài ràng rén xiāngxìn le.

Once you are found to have lied, it will be hard for people to trust what you say in the future.