求翻译：我从来都没有到专业机构补习过，但这回去了一次，以前总认为学懂了就行了，但是通过这次和前几次的考试我明白了光学会还是不够的是什么意思？

I have never been to a professional organization tutorial, but this back, used to think to learn on, but by this and previous exams, I understand the optics will still not enough

I have never been to the professional bodies, but this tutorial has been returned to the previous one, and learned that on-line, but by the time the first few times and I understand that the exam will not be enough of an optical

I have not enrolled in supplementary lessons to the specialized organization, but this went back one time, before always thought study understood has been good, but several times took a test I through this and first to understand optics to be able insufficient

I have never been to a professional body tutorial, but this back once, have previously been thought that learned on the line, but I see through this and previous examinations of optical society is not enough

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