余热yúrè 1.生产过程中剩余的热量{(of a production process) surplus energy}: 利用～取暖。{use surplus energy for heating purposes} 2.〈比喻fig.〉离休、退休以后的老年人的精力和作用{retired old people's capability for work}: 老专家要发挥～,为社会多做贡献。{Old experts should do what they can in their old age to make contributions to society.}?f