The four crops grown in rotation are corn, soybean, wheat, and alfalfa, with one crop grown each year during the 4-year cycle.

轮作的四种作物是玉米、大豆、小麦和苜蓿，四年内每年种植一种作物。

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Rainfall fell by 50-percent in areas along the Huaihe River during the first four months of the year, and crops are now under severe threat.

今年第一季度，淮河地区的降雨量就下降了50%，而且如今庄稼受到严重的威胁。

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