Telefondaki ses bana yabancıydı.
- The voice on the phone was unfamiliar to me.
Yabancı dillerle yabancı olursan, yabancının sessizliğini asla anlayamazsın.
- Being unfamiliar with foreign languages, you'll never be able to understand the foreigner's silence.
Due to my unfamiliarity with the library's catalog system, it took several hours to find the book.