Ben bu terime yabancıyım.
- I'm unfamiliar with that term.
Tom bir yabancı adam tarafından sokakta gece bıçakla tehdit edildi ve parası soyuldu.
- Tom was threatened with a knife on the street at night by an unfamiliar man and robbed of his money.
Due to my unfamiliarity with the library's catalog system, it took several hours to find the book.