究其原因，既有外部因素，也有内部原因。
For its reason, current exterior factor, also have the internal reason.
造成员工流失既有员工自身因素、外部环境因素，也有企业方面的因素。
Not only the factor of employee itself and environment but also that of enterprise results in the employee turnover.
紧张心理的出现既有应试者自身准备不充分，存在侥幸心理等方面的主观原因，也有外部因素如测试的形式、内容、环境等造成的影响。
This is due to the forms, contents and environment of test as well as the inadequacy of testee's preparation for the test and their idea of trusting to luck.
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