中国现有宜农荒地3500万公顷，其中可开垦为耕地的约有1470万公顷。 译文：China now has 3.5 million hectares of wasteland which are suitable for farming. Of this, about 1.47 million hectares can be reclaimed.

问答题提高现有耕地单位面积产量有潜力。译文：Increasing the yield per unit area on the existing cultivated land has potential.

问答题Wheel A turns twenty percent faster than wheel B.译文：A轮转动速度是B轮的20%。

问答题This plot is three times larger than that one.译文：这块地是那块地的三倍。

问答题New booster can increase the payload by 120%.译文：新型助推器能使有效负载增加到120%。

问答题Natural agricultural resources, production conditions, technical level and some other conditions ensure great potential in this respect.译文：自然农业资源、生产条件、技术水平和其他条件，保证在这方面有很大潜力。