短语词组短语Arable land area 耕地面积arable land area is small 耕地面积小change of arable land area 耕地面积的变化arable -land area change 耕地数量变化increase arable area 增加耕地面积total arable area 总耕祖积area of arable land 耕地面积 返回 arable area