In particular they do not allow the passage of energy as heat.
A few cells however are living and allow the passage of water through them.
It did not allow the free passage of educational material.
They said that if you arrive you'll be allowed free passage through the front door.
For once, he didn't step back to allow passage around the outside edge in single file.
There was a walk around it to allow the passage of those who had set the trap.
The sitting condition allowed the passage of time to be evaluated.
It also allows the passage from one line to another through a switch between the two lines.
The door had opened to allow the passage of a form that was invisible from this spot.
Anyone who wants to escape the city will be allowed passage through my army.