Another little pop quiz here, and these aren't trick questions necessarily, but if you had to guess what the bigger problem was in the developing world, so let's not just say outside the U.S.
我们再做一个小测试,这不是什么难题,你们猜猜,发展中国家面临最大的问题是什么,我们所说的不是美国以外的国家
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