What idioms are used to describe "a little knowledge"?

Cicadas don't know snow? Ignorance? Shugou barking at the sun is myopia, myopia, myopia, myopia, myopia.

1.? The frog in the well doesn't know the size of the world outside the well, and the benefits of selling the well are really ignorant. The savage made a sentence.

Don't think that country people are ignorant. When it comes to whole grains, they are very knowledgeable.

Some people are ignorant, but they like to talk big and show off themselves.

I know little about computers, so I have to ask you more.

If you haven't heard of it, don't feel ignorant.

Being ignorant, he is always joking.

7.? Closing the door to the outside world and sticking to the rules can only make the people ignorant and the country poor and backward.

Please forgive my ignorance. What is "Legionnaires' Disease"?

9. There is no TV at school, so I am ignorant!

10. An ignorant person like him always thinks his proposal is the best. Really a savage.

1 1. I'm really ignorant. I have never seen or heard of this plant.

12. You are so ignorant that you don't even know such a famous person.

13. I am ignorant. I hope you can give me more advice!