They are alien to our realities.
These notions are alien to Islam.
Often that can be alien to a child.
But while? ought? and? should? are alien to Science, they are very much a part of life.
The sounds were new and totally alien to the parents of the teenagers -- always a plus.
Sometimes we are alien in our own land.
I felt almost alien in church, almost a stranger.
Our leaders mostly are alien in their own societies.
This concept is totally alien in our modern age where we are allowed freedom of choice.
Old People homes were alien in concept and elder abuse was considered a Western problem.
They had trouble managing the flowing but mis-matched Arab robes on TV that are so alien in the parts from where they hail.
Beyond that anything that doesn't come from (INSERT LOCATION) is alien in (INSERT LOCATION ), but I get what you're saying.
So alien from outer space visit us and live.
It's pretty alien from a female point of view.
Nothing, however, is alien from that original source whence it derives its own properties.
Nexus and kindle are very alien for me, I never used android tablet just becoz of coolness factor.
Nor do I find it alien for Muhammad ' alaihis-salaam ' to have appointed Hasan and Huseyn as Khaleefas.
Given this, I figured the Thing to have some kind of intelligence, even if it was too alien for us to understand.