shifting lever boot

例句：

1. 1. The worker needsto wear a shifting lever boot to protecthis feet from the cold weather.
   工人需要穿可移动的杠杆式靴子来保护他的脚免受寒冷天气的影响。
2. 2. The constructionworkers are required to wear shifting lever bootswhen working on the scaffold.
   建筑工人在脚手架上工作时需要穿可移动的杠杆式靴子。
3. 3. The engineerinspected the shifting leverboots before they were put intouse.
   工程师在投入使用之前检查了可移动的杠杆式靴子。