柯林斯词典coolant /ˈkuːlənt/ (coolants) 1. N-MASS Coolant is a liquid used to keep a machine or engine cool while it is operating. 冷卻劑 返回 coolant剑桥词典a specially prepared liquid that is used to stop a machine from getting too hot while it is operating 冷卻劑 返回 coolant