求翻译：教师必须保证教学内容思想性、科学性、系统性和先进性的统一，不断更新和充实教学内容，及时介绍学科的最新发展成果，做到重点、难点突出，深度、广度适宜，条理清晰，逻辑性强。是什么意思？

Teachers must ensure that the teaching content ideological, scientific, systematic and advanced nature of unity, constantly updating and enhancing the teaching content, and timely introduction of the latest developments of the disciplines, so that the focus and highlight the difficulty, depth, appro

Teachers must ensure that thoughtful, science teaching content, system, and the unity of art and constantly update and enrich teaching and learning content, and timely information on the latest science results of development, and highlighted key, difficult to do, but the depth, breadth and clarity,

The teacher must guarantee the course content ideological nature, the scientific nature, the systematic characteristic and the advanced unification, renews and the substantial course content unceasingly, introduced promptly the discipline the most recent development achievement, achieves, the diffic

Teachers must ensure that the teaching content of ideological, scientific, systematic and advanced unified, constantly updated and enriched teaching content, describes the subject of the latest developments in a timely manner, do, difficulties focused, suitable depth, breadth and clarity, strong log

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