Malo A R, Nicholson S E.A study of rainfall and vegetation dynamics in the African Sahel using normalized difference vegetation index[J].是什么意思_Malo A R, Nicholson S E.A study of rainfall and vegetation dynamics in the African Sahel using normalized difference vegetation index[J].在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句