feeling that you have done nothing wrong
有一种感觉，你没有做错任何事情 (yǒu yī zhǒng gǎnjué, nǐ méiyǒu zuò cuò rènhé shìqíng)
"He can sleep well because he has a clean conscience."
"他可以睡得很好，因为他有一颗干净的良心。" (Tā kěyǐ shuì dé hěn hǎo, yīnwèi tā yǒu yī kē **gānjìng de liángxīn**.)
to fail completely or embarrass oneself
to compromise by agreeing to part of what each person wants
too great or extreme to be described in words
to praise oneself; to boast about one's achievements
to model the behavior you expect from others
to protect your computer system or network from attacks
