arid and semiarid

基本解释

About 200 species: arid and semiarid regions of the W hemisphere; two species in China.
大约200种：西半球的干旱和半旱的地区；中国有2种。
As a kind of special soil, aeolian sandy soil mainly lies in arid and semiarid areas where sand drift activity is very strong.
沙土是存在于干旱、半干旱地区的一种特殊性土，其岩土工程性质与风沙环境紧密相关。
Arid and semiarid areas are main areas of food production in our country. Water shortage and nutrient deficiency are two key factors that restricted crop production in these areas.
干旱和半干旱地区是我国重要的农业生产区，水分不足和养分缺乏是制约其生产发展的两个关键因素。