企业主要负责人、项目负责人和专职安全生产管理人员。
上述三类人员的父母、配偶及子女。
The family members (parents, spouse or children) of those of three kinds described above.
当前中国就业市场上的弱势群体主要由三类人员组成：下岗人员、失业人员和进城谋生的农民工。
China's current job market vulnerable groups composed mainly of three types: laid-off workers, unemployed people and migrant workers in cities to make a living.
将应用程序翻译成其他语言，而不是开发人员在开发期间使用的语言，这需要对此软件进行三类测试。
Translating the application to languages that are not the language used by developers during development adds the necessity for three types of tests to be done on the software.
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