At first this meant that clocks were set on shelves high on the wall with a hole cut in the shelf for the pendulum to hang through.
因为有长钟摆，最初的时钟是放在墙上的搁板上，再在搁板上钻个洞把长钟摆穿过去。
My favorite piece of sculpture is a solid wall with a hole in it to frame the space on the other side.
我最爱的雕塑作品是一堵素面的墙，上面打了个洞，来悬挂位于墙壁另一面的空间。
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