求翻译：研究企业经营管理和发展的重大问题。以及讨论有关工资、福利、劳动安全、社会保险等涉及职工切身利益的问题时，应由工会代表参加。是什么意思？

Study business management and development of major issues. Discuss wages, benefits, labor safety, social insurance and other issues involving the vital interests of the workers, should be participated in by representatives of trade unions.

Study business management and development of the major problems. As well as discuss the salary, benefits, labor safety, and social security, workers' interests involved, should be represented by trade unions.

The research enterprise management and operation and develops major issue.When as well as the discussion related wages, the welfare, the labor safety, the social security and so on involve the staff vital interest the question, should participate by union delegate.

Study on the major issues of business management and development. As well as discussing the wages, benefits, job safety, social insurance and other issues involving workers ' vital interests, should be attended by representatives of trade unions.

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