obcy nieznany in inglese:

He looked out into a crowd of unfamiliar faces.

I am unfamiliar with the customs of this country.

If you come across an unfamiliar word, look it up in your dictionary.

You should look up all unfamiliar words in a dictionary.

The landscape is unfamiliar to me.

We drove through unfamiliar territory.

The cat was scared by an unfamiliar noise.

The travellers need someone to guide them through the unfamiliar jungle.

Jerry decided to leave the motorway and take an unfamiliar route to the airport. No wonder we got lost.

The voice on the phone was unfamiliar to me.

The tribe worships its ancestors and speaks its own language, and speaks an unfamiliar language.

At first there will be many unfamiliar words and grammatical forms, but you don't have to be afraid.

I wonder if that restaurant accepts unfamiliar customers.