wiper vacuum governor

例句：

1. 1. The floorwas wiped clean with a damp cloth.
   用湿布擦干净了地板。
2. 2. Themop is very effective at removing dirtand grime.
   拖把非常有效地去除污垢和灰尘。
3. 3. The sweeper has justfinished cleaning the office.
   扫帚刚刚完成了办公室的清洁工作。