gantry legs

例句：

1. 1. The crane's gantrylegs were securely anchored to theground.
   起重机的起重机腿被安全地锚固在地面上。
2. 2. The engineer inspectedthe gantry legs before lifting theheavy equipment.
   工程师在提升重型设备之前检查了起重机腿。
3. 3. The construction workers hadto disassemble the gantry legsto access the upper floors.
   建筑工人不得不拆卸起重机腿以进入上层楼层。