Be in one ear and out the other
My instructions to my kids are often in one ear and out the other, especially if they have their phones in front of them.
Be up to one's ears in sth.
She's up to her ears in debt and has no money to give back to you.
Ears must be burning
Wow, your ears must be burning because Mom and I were just talking about you and your new job.
Turn a deaf ear to sth.
She turned a deaf ear to her Dad’s advice and took the job anyway.
Earring n. 耳环；耳饰
I couldn't wear these earrings because my ears aren't pierced.