![How to say "What does [x] mean?" in Chinese (Mandarin)?](https://speakingmandarin.info/wp-content/themes/anima/resources/images/headers/glasses.jpg)
Like, if your teacher is talking to you and you do not understand a particular word or phrase, how do you say, "What does [x] mean?" or "I did not understand [x]"?
What is a simple way to say this? I tried saying "[x] shi shenme?" But I am not sure if that is the correct sentence for this context.