求翻译：通过2年多的工作，对TD协议和一些常见网络问题有一定了解；对测试用例的编写、执行、log的抓取、初步分析、测试报告的撰写等熟练掌握是什么意思？

Through 2 years of work, on TD Protocol and some have a certain understanding of common network problems; on the preparation of the test cases, execution, the crawl log, preliminary analysis, writing of test reports, and other skilled