However, an appropriate amount of precipitation may facilitates the emergence of nymphs, thus increasing the initial num降水量太多不利于草地蝗虫的发育，但降水适量因有利于蝗蝻出土可能会增加蝗虫基数。
Regions received the same amount of precipitation they would have normally, but all of it as rain.每个区域的降雪都是正常量，并且同降雨一样。