1 sentence

1. 但纸面上看起来好的东西在实践中并不总是有效的。

   dàn zhǐ​miàn shang kàn​qi​lai hǎo​de dōng​xi zài shí​jiàn zhōng bìng​bù zǒng​shì yǒu xiào de.

   What looks good on paper doesn’t always work in practice.

   Source: CCMatrix