hose down(v.+adv.)
用水管里的水冲洗use a hose on especially for washing
▲hose sth ⇔ down
He is hosing the car down.他正在洗车。
We hosed down the car before we waxed it.我们在给汽车打蜡前必须先冲冲车。

hose out(v.+adv.)
用水管里的水冲干净wash sth thoroughly with a lot of water through a pipe
▲hose sth ⇔ out
After raining,I always hose the yard out.雨后,我总是用软管把院子冲干净。

It's a fifty feet long hose.那是条50英尺长的软管。
Are there any fire hoses in the building?在这幢大楼里有消防水管吗?
She bought a pair of woollen hose yesterday.昨天她买了一双毛线袜子。