This is a little experience I have left over many years of fighting with the level 4 and 6. Difficult sentences are often unfamiliar with phrases and cannot be translated. This app is a collection of more than 1,000 levels for level 4 and 6 and daily use that I have collected. The phrases are made into an App for convenient learning anytime, anywhere.

The App uses the SM2 memory algorithm to implement the review strategy.

If you have any questions, you can contact the developer, welcome to communicate.

May all go well with you! ! !