Meaning: Openings in walls allowed light and air to enter.
Choice of Words: Windows are openings in walls. Let means allowed to enter. Light is what makes it possible to see. Air is what we breathe.
Alternative Expressions
Windows are openings that allow light and air to enter.
Meaning: This means that windows are openings that let light and air come into a building or room.
Choice of Words:Openings are spaces or holes that allow something to pass through. Allow means to give permission or the opportunity for something to happen. Enter means to come or go into a place.
Through windows, light and air can enter.
Meaning: This means that windows allow light and air to come into a building or room.
Choice of Words:Through means passing from one side of something to the other. Can indicates that something is possible or able to happen. Enter means to come or go into a place.