硬性管

20m宽度、长度100公尺或五十米,无梭织聚氯乙烯层与层或复本.以牛皮纸包装或气泡内硬管包装.

hard cash

hard times

hard to bear

hard palate

go hard with sb.

hard stool

Strike-Hard Operation, campaign to crack down relentlessly on criminal activities

hard water