arid and semiarid

基本解释

About 200 species: arid and semiarid regions of the W hemisphere; two species in China.
大約200種：西半球的乾旱和半旱的地區；中國有2種。
As a kind of special soil, aeolian sandy soil mainly lies in arid and semiarid areas where sand drift activity is very strong.
沙土是存在於乾旱、半乾旱地區的一種特殊性土，其巖土工程性質與風沙環境緊密相關。
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.
乾旱和半乾旱地區是我國重要的辳業生産區，水分不足和養分缺乏是制約其生産發展的兩個關鍵因素。