区别：in the wall指在墙里面，on the wall在墙表面。
in the wall与on the wall。
in the wall指在墙里面。
比如there is a window in the wall.
墙上有个窗户。
on the wall在墙表面。
There is a picture on the wall.
墙上有张画。
wall双语例句
Kathryn leaned against the wall of the church.
凯瑟琳倚靠在教堂的墙上。
He sat on the wall in the sun.
他坐在墙上晒太阳。
He ran his fingers along the inside walls of the box.
他用手指摸了摸盒子的内壁
