例句與造句

1. The average soil fertility rose in the north china plain and mid - lower yangtze river regions , and decreased in the northeast . additionally , although the north china plain saw an improvement in soil ph - value , acidification of the soil increased in the other regions
   土壤肥力數據的分析結果表明，樣本總體而言，從80年代初到2000年，除土壤速效鉀下降和土壤酸堿性有所退化外，農業(yè)上壤的有機質、全氮和速效磷平均含量都增加了。
2. It's difficult to find plain saw in a sentence. 用plain saw造句挺難的