The pair spent much of the race trading places, often a number of times per lap. 他倆在比賽的大部分時間都膠著在一起,基本上每圈都因此多花了一些時間。
Demand for cement is growing faster than emissions per tonne are falling, leading to an overall increase in emissions. 一個多世紀以來,水泥生產商們一直致力於提高煤窯的燃燒效率,因此能夠大幅提高的空間相對來說不大。