ventilating jack

例句：

1. 1.He used a ventilating jack to lift the heavy door open.
   他使用通风器千斤顶来打开沉重的门。
2. 2.The carpenter used a ventilating jack to support the roof during the construction.
   木匠在建造过程中使用了通风器千斤顶来支撑屋顶。
3. 3. The ventilating jack was essential for the workers to breathe fresh air while working in the confined space.
   通风器千斤顶对于工人在狭小空间内呼吸新鲜空气至关重要。