例句與用法

1. They had not traversed many steps of the long main staircase when he stopped , and stared at the roof and round at the walls
   他們才踏上長長的主樓梯沒幾步，老人便停下了腳，盯著房頂和四壁細(xì)看。
2. Although the flowers were recently moved away from the main staircase ? where the vibrations from visitors ' feet were quite intense ? they have suffered damage over time
   盡管這些脆弱的花朵最近已被移往離主梯較遠(yuǎn)的地方，以遠(yuǎn)離游客步伐引起的劇烈震動，但經(jīng)年累月下來有些早已受損。
3. Use , the operator should carefully check any errors or insulation parts crack and the main staircase linking it firmly , various accessories , such as whether the trailer , to prevent accidents
   使用前，操作人員應(yīng)認(rèn)真檢查絕緣梯主體及零部件有無缺陷或裂紋，連接是否牢固，各種配件是否松脫等，嚴(yán)防發(fā)生意外。