engine-driven knapsack sprayer

例句：

1. 1. The engineer-drivenknapsack sprayer is anessential tool for cleaning the factory floor.
   工程师驱动的背包喷雾器是清洁工厂地板的必备工具。
2. 2. The engineer-driven knapsack sprayer was used todisinfect the hospital's corridors.
   工程师驱动的背包喷雾器被用来消毒医院的走廊。
3. 3. The engineer-driven knapsack sprayer proved to bea cost-effective solution for the company's cleaning needs.
   工程师驱动的背包喷雾器证明了对公司清洁需求来说是一种经济有效的解决方案。