arid and semiarid

基本解釋

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(qū)；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(qū)的一種特殊性土，其巖土工程性質(zhì)與風(fēng)沙環(huán)境緊密相關(guān)。
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(qū)是我國重要的辳業(yè)生産區(qū)，水分不足和養(yǎng)分缺乏是制約其生産發(fā)展的兩個(gè)關(guān)鍵因素。