bottom rail

基本解釋

The load cell can also be moved up and down the length of the bottom rail.
負載細胞也可以提出向上和向下的長短，底部的鐵。
Sometimes, if you stand on the bottom rail of a bridge and lean over to watch the river slipping slowly away beneath you, you will suddenly know everything there is to be known。
有時倘若你站在橋最下面一根欄桿上，彎腰看河水從你身下緩緩流過，你會突然頓悟一切。
edu.sina.com.cn
Sometimes, if you stand on the bottom rail of a bridge and lean over to watch the river slipping slowly away beneath you, you will suddenly know everything there is to be known.
有時候，如果你站在一座橋的最下面的一根欄桿上，彎腰看河水在你下面緩緩流過，你會突然明白一切。