原文：今年的粮食产量可望比去年翻一番。译文：The grain production this year is expected to double last year.

原文：今年的粮食产量可望比去年翻一番。译文：The grain production this year is expected to double last year.

The grain production this year is expected to double that of last year. (考点:比较对象的代词运用在翻译中不能省略)