求翻译：在板书设计这一方面的技能需要提高。实习期间，学校多媒体资源较少，因此大部分课堂都运用到黑板，在板书设计方面，很多情况下我没有认真地设计，课堂上有时甚至是见空就写，一堂课下来发现自己写得黑板杂乱无章，重点部分不突出，有些语句出现了爬坡或下坡的情况。在板书的重要性之后，懂得了板书设计的几个原则。首先，板书要反映教学的主要内容，突出教学重点。其次，板书设计要层次分明、简练，逻辑性强。第三，板书布局要合理，字迹大小适宜，疏密得当。是什么意思？

The skills needed to improve this aspect of the writing on the blackboard design. Internship during the school multimedia resources less, so most of the classroom are applied to the blackboard, blackboard design, in many cases, I have not carefully designed, sometimes see an empty classroom to write

In the book design skills needed to be improved. During the training, the school multi-media resources, and less so a lot of classroom is used to the blackboard, and on the board in the Design book, and a lot of cases I have not been taken seriously in the design and the class and sometimes even see