He said he has double cropped for years.

他说，他多年来一直在种植两种作物。

He has double cropped for years and recently appeared with U.S. President Joe Biden to support efforts to increase food production.

多年来，他一直是一年种植两种作物，最近他与美国总统乔·拜登一起露面支持增加粮食产量的行动。