四名衣着鲜艳的男子爬到高耸的木竿顶端。
Four brightly dressed men climb to the top of a tall wooden pole.
那些较短的木竿上的油灯比那些较长木竿上的油灯摆动速度要快。
Those that were on the shorter rods vibrated much faster than those on the longer rods.
那个时代，灯只能靠油来点燃，并用一根长长的木竿从天花板上垂吊下来。
The lamps, which burned only oil in those days, were hung by long rods from the ceiling.
每根绳子就像木竿一样成了钟摆。
每根绳子就像木竿一样成了钟摆。
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