Second, don't talk to the wall in the back or to the window or to the side.
第二，不要对后面的墙、窗户或侧面说话。
2
There is a large window on either side of the front door.
前门两侧各有一个大窗户。
《牛津词典》
3
In another incident in the 1980s, a British Airways 747 flew into a dust cloud and the grit sandblasted the windscreen. The pilot had to look out a sidewindow to land safely.