慢速英语:WHO: Environmental Pollution Kills Millions of Children Every Year

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vulnerable – adj. capable of being physically or emotionally wounded

access – n. a way of being able to use or get something

sanitation – n. the process of keeping places free from dirt, infection, disease, etc., by removing waste, trash and garbage, by cleaning streets, etc.

pernicious – adj. causing great harm or damage often in a way that is not easily seen or noticed

leveler – n. something that treats or affects all people the same way

here-and-now – n. the present time —used with the