柯林斯词典dilution /daɪˈluːʃən/ (dilutions) 1. N-COUNT A dilution is a liquid that has been diluted with water or another liquid, so that it becomes weaker. 稀释液 "Aromatherapy oils" are not pure essential oils but dilutions. “香薰精油”不是纯精油，而是稀释油。 返回 dilution