Commentary in the form of keywords
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To enable quick review when reviewing
The commentary is sweet as concisely as possible.
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[Chinese character display]
For learning effect
Chinese characters are used in a larger notation.
[Check Note]
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After registering only wrong or confusing problems in Checknote
You can see it later.
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[Word book]
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A vocabulary function has been added so that you can memorize it repeatedly.
Test randomly
You can test only what you choose.
Recently, It contains only utterances, regulations, vocabulary, and Chinese characters.