For example, the number of children with asthma has dropped by around 20%.
例如，患有哮喘的儿童数量下降了约20%。
Good air quality benefits everyone, especially people with allergies and children with asthma.
良好的空气质量所有人带来好处，与过敏和哮喘的儿童，尤其是人。
But the opposite was true for children with mothers who had asthma.
但哮喘母亲所生儿童却相反。
Nine million U. S. children under 18 have been diagnosed with asthma.
美国9000000未满18岁的儿童已被诊断出患有哮喘病。
Nine million U. S. children under 18 have been diagnosed with asthma.
美国9000000未满18岁的儿童已被诊断出患有哮喘病。
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