water 后用单数还是复数
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water 后用单数还是复数
the outlet hole can connect with several pipes to where hot water is needed.
这句中,water后用is有没错
the outlet hole can connect with several pipes to where hot water is needed.
这句中,water后用is有没错
water是不可数名词,要用单数.
当water用复数时,表示河流
当water用复数时,表示河流