求翻译：6、根据测试项目的特点，测试工程师需要完成与测试相关的其它任务，例如设计或修改测试案例，参加培训和学习，编写测试文档，与客户联系，解答他们提出的技术问题；是什么意思？

6, according to the characteristics of test items, test engineers need to complete other tasks associated with testing, such as design or modify the test cases, training and learning, writing test documentation, and customer contact to answer their technical questions;