农民们正在地里收割玉米。

The farmers are ___harvesting corn in the field.

经过多年的研究，科学家们终于收获了重要的发现。

After years of research, scientists finally ___harvested important discoveries.

农民们正在田里忙着收割庄稼。

The farmers are busy with the ___harvest in the fields.

今年的苹果收成比去年多了一倍。

The apple ___harvest this year is twice as much as last year's.