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Climate Change May Turn Africa’s Dry Sahel Green

2017-07-15来源:VOA
Words in This Story

pattern – n. a repeated form or design; something used as a model

mind-boggling – adj. emotionally or mentally exciting

tip – v. to move the balance of power or influence

erratic – adj. having no fixed path or direction

challenge – n. a difficult problem or issue

fossil fuel – n. a fuel formed in the earth from plant or animal remains