Each of these has a particularly unusual feature about them.
It also has some unusual features for a town its size.
The film is noted for a number of unusual features.
Perhaps the most unusual features of the building are its shape and color.
An unusual feature in this school is its open space.
The shape control was a rather unusual feature for the time.
In an unusual feature, the contract would run 39 months.
The most unusual features of the rule follow from this difference.
You do not think that your website needs any unusual features.
I may say that this case presents some unusual features.