The characteristics of nitrogen(N) and phosphorus(P) loss under 5 land use patterns were studied in Sunjia small red soil watershed during the Course of rain.

研究了次降雨过程中红壤小流域5种不同土地利用方式土壤N，P养分流失特征。

youdao

In Senegal,the new U.N.assessment says more than 260,000 people are affected by weeks of heavy rain, most living in poor neighborhoods built on lowlands outside the capital,Dakar.

VOA: standard.2009.09.08