Their spread in poor countries is not just reshaping the industry-it is changing the world.
他们在贫穷国家的流行不仅仅是产业的重组——这是在改变世界。
Poor hygiene encouraged the spread of the disease.
糟糕的卫生状况助长了疾病的传播。
Cholera epidemics spread by poor sanitation are common.
流行性霍乱传播的一种普遍方式是卫生条件差。
Cholera epidemics spread by poor sanitation are common.
流行性霍乱传播的一种普遍方式是卫生条件差。
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