它包括使用比例，百分比，比例推理来解决科学、社会科学和职业中的问题。
It includes using ratios, percentages, and proportional reasoning to solve problems in science, social science, and career contexts.
现阶段职业女性普遍存在着角色冲突问题，这一问题的产生具有历史、社会、家庭和个人因素。
There is an ubiquitous role conflict of professional females, which is caused by historical, social, family and individual factors.
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.
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