求翻译：这次基础知识专业的培训对我来说，无疑是一个莫大的收获。语音、听力、口语、写作对我的英语水平有了一个很大的促进。是什么意思？

The basics of professional training for me, is undoubtedly a great gain. Speech, hearing, speaking, writing on my English level has been a great deal of promotion.