求翻译：对于像专业化工业项目和基础设施项目，可以由其内部的人员来从事有关的运营和维护工作，由专业经理来从事对于像公寓和办公楼这样的项目的这些工作是什么意思？

For as specialized industrial projects and infrastructure projects, can by its internal staff to perform the operation and maintenance by professional managers to engage in apartments and offices for such as these work projects

Like a specialization in industrial and infrastructure projects, can be provided in-house staff to perform the operation and maintenance of related work by professional managers, to engage in the apartment and office buildings like this in the work of the project

Regarding the alike specialization industrial project and the infrastructure project, may be engaged in the related operation and the maintenance work by its internal personnel, is engaged in by specialized manager regarding likely the apartment and office building such project these work

Like specialized industrial projects and infrastructure projects, can by its internal personnel to engage in the operation and maintenance work, by a professional manager to engage in projects such as the apartment and office building

For as specialized industrial projects and infrastructure projects, can by its internal staff to perform the operation and maintenance by professional managers to engage in apartments and offices for such as these work projects