有超过7,000澳大利亚人参与了在职业和环境卫生方面的调查，研究者分析了7年的研究数据。
The researchers analyzed seven years of data from more than 7, 000 respondents of an Australian labor survey for their Occupational and Environmental Medicine study in which they wrote
有超过7,000澳大利亚人参与了在职业和环境卫生方面的调查，研究者分析了7年的研究数据。
The researchers analyzed seven years of data from more than 7,000 respondents of an Australian labor survey for their Occupational and Environmental Medicine study in which they wrote
他们称“社会工程”（一些项目有古巴人参与）改善了卫生、教育和职业培训条件，使食品价格下降。
Social "missions", some of them staffed by Cubans, are said to have improved the provision of health, education and vocational training, as well as offering cheap food.
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