professional worker的用法和样例：
例句
- The conditions under which the urban poor and professional people existed as independent social strata have virtually been eliminated.
城市贫民和自由职业者差不多已经失掉成为社会阶层的条件。 - We specialize in Professional web design and Affordable Ecommerce, providing complete and the best solution to start up businesses and professionals.
我们擅长专业与经济的商务，为新公司以及自由职业者提供完整以及最好的方案。
