The physical ideas are the basic element of physical knowledge, the base of physics and is the keystone and difficulty of physical teaching.
物理概念是组成物理知识的基本元素，是物理学的基础，也是高中物理教学的重点、难点。
His knowledge of physics is pretty basic.
他的物理知识相当浮浅。
The outstanding feature of this book is that it is self-contained, in that no specialised knowledge is required on the part of the reader, apart from basic undergraduate mathematics and physics.
这本书的突出的特征是它是拘谨的，除基本的大学生数学和物理学外，在那里没有专业化的知识被代表读者要求。
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