求翻译：此外课堂导入应注意教学内容的科学性。教学目的要通过教学内容予以体现，教学内容的科学性体现在教师对概念、定义的表述，所作的论证，引用的事实、材料和语言表达等都要正确无误，具有高度的科学性。这就要求教师在“导入”时要精心设计、内容正确、方法得当、前后连贯、自然过渡、干净利落、效果显著，千万不能观点过时、牵强附会、前后矛盾、无的放矢、错误百出。是什么意思？

In addition, the classroom import should be noted that the scientific nature of the teaching content. Teaching purposes should be reflected through the teaching content and teaching the content of science embodied in the formulation of the teachers on the concepts, definitions, and the argument made

In addition class import should be aware of the contents of teaching science. Learning to be reflected through teaching content and the content of the science teachers to reflect on the concepts, definitions, and proofs of concept and the fact that the reference materials, and linguistic expressions

In addition the classroom inducts should

Besides import should pay attention to the teaching of science in the classroom. Teaching purposes to be reflected through the teaching content, teachers in teaching science is reflected in the content of the concepts, definitions, and arguments made by and referenced facts, materials and language e