When solving a solid geometry problem, if we transform the problem into space vector, we shall get twice the result with half the effort.
在解答立体几何问题时，若能把立体几何问题转化为空间向量的运算，解答起来会收到事半功倍的效果。
When solving a solid geometry problem, if we transform the problem into space vector, we shall get twice the result with half the effort.
在解答立体几何问题时，若能把立体几何问题转化为空间向量的运算，解答起来会收到事半功倍的效果。
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