他的良心让他无法忽视那个困境。

Tā de liángxīn ràng tā wúfǎ hūshì nàge kùnjìng.

His conscience prevented him from ignoring that dilemma.

这个商家以良心经营，赢得了客户的信任。

Zhège shāngjiā yǐ liángxīn jīngyíng, yíngdéle kèhù de xìnrèn.

This business operates with integrity and has earned the trust of customers.

他以良心做事，从不欺骗他人。

Tā yǐ liángxīn zuòshì, cóngbù qīpiàn tārén.

He does things with a clear conscience and never deceives others.