They squirted each other with soapy water.

他们相互喷洒肥皂水。

《柯林斯英汉双解大词典》

Stains are removed with buckets of soapy water and scrubbing brushes.

污点用一桶桶的肥皂水和擦洗的刷子除掉了。

《柯林斯英汉双解大词典》

Let the clothes soak for a few hours in soapy water.

让衣服在肥皂水中泡几小时。

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Instead, it points the finger squarely at the industry's sub-par standards testing, claiming the procedures for IPX5, IPX6 and IPX7 require the use of pure, room temperature H2O, not the warm, soapy water involved in everyday hygiene.

ENGADGET: Jawbone starts over, announces a redesigned version of its Up lifestyle-tracking wristband

It's just soapy water.

NPR: Excerpt: 'World Made By Hand'

He said that the policemen had splashed soapy water on the floor and walls of the cell, as they usually did, and that the old man, who had not bathed in a week, had yanked his shirt off and rubbed his frail back against the wet floor.

NEWYORKER: Cell One