i am reading A Girl Threatened by Sexual Exploitation by Harriet Jacobs.

Can someone please explain what this excerpt mean? " My master began to whisper foul words in my eat. Young as I was, I could not remain ignorant of their import. I tried to treat them with indifference or contempt".

I don't understand what she means by I could not remain ignorant of their import. I tried to treat them with indifference or contempt

Thank you

foul words in my EAR?

She really didn't understand what the individual words meant, but she got the idea that they were bad. She tried to ignore them, but couldn't.