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English definition of “grey water”

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grey water

noun [U] ( US gray water)
 
 
ENVIRONMENT
water that has been used before, for example for washing, that can be stored and used again: If more properties were fitted with a grey water system we would be saving up to 30% of our fresh water.
Translations of “grey water”
in Chinese (Traditional) 灰水(使用過的水)…
in Chinese (Simplified) 灰水(使用过的水)…
(Definition of grey water from the Cambridge Business English Dictionary © Cambridge University Press)
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