The present section has included only the basic principles of a microscope.
本节只涉及显微镜的一些基本原理。
Only grasp the principles of planning, tax planning can maximize the benefits.
只有把握筹划原则，才能实现纳税筹划效益最大化。
I only act on my own principles.
我只按自己的原则处事。
I knew very little economics, for I had taken only the two principles courses.
当时我只上过两门经济学基础课程，对经济学知之甚少。
Obviously, only having principles is not enough, we must still have advanced system.
显然，光有先进的理念是远远不够的，必须有先进的制度作为保障。
Obviously, only having principles is not enough, we must still have advanced system.
显然，光有先进的理念是远远不够的，必须有先进的制度作为保障。
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