Here are some other possible translations depending on context:
* Strange: This is the most common translation.
* Unusual: This emphasizes the uncommon or unexpected nature of something.
* Weird: This is a more informal and colloquial translation, often used to describe something that is strange or odd.
* Foreign: This translation can be used when talking about something unfamiliar or from another culture.
It's important to consider the context of the sentence when translating "extrañas" to get the most accurate meaning.