More mature student achievement query / management system, in which a clear functional modules, with a simple note.
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Try keeping some review materials on you at all times - even if it is something as simple as a note card with review concepts on it.
任何时候都尝试保存一些自己的复习资料-即使它们一如记录了一些复习想法的笔记卡片般简单。
Note that, as with the categories, the format of the information is more complex than a simple arguments.
注意，与类别的情况一样，信息的格式也比较复杂。
Even a simple note on my guitar has an array of harmonic frequencies. But the frequencies have a special harmonic relationship, which is why you hear it as a single sound with a single pitch.
即使是一把吉他上一个简单的音节都有一系列的谐振频率，而这一系列的谐振频率都有着特殊的谐振关系，这也正是为什么我们听到的只是某一音调上的一个单音。
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