艾滋病是当今重大的公共卫生问题和社会问题。
Nowadays, AIDS becomes the serious public health and social pr ob lem.
职业病危害已经成为中国目前一个重大的公共卫生问题和社会问题。
Harm of occupational disease has been a serious public health problem and social problem in China.
结核病是经呼吸道传播的慢性传染病，已经成为重大的公共卫生问题和社会问题。
TB is spread through the respiratory tract of chronic diseases, has become a major public health problems and social problems.
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