The more advanced grammar constructs can be daunting, but they are not needed for most purposes.

更高级的文法构造可能会让人望而生畏，不过在大多数用途中不需要这么高级的文法。

youdao

It has everything that makes a children's book great for English learners: simple and advanced vocabulary, as well as simple and advanced grammar concepts.

对英语学习者而言，它具备很棒的童书所有的一切：简单和高级词汇，还有简单和高级的语法概念。

youdao

Despite being a children's book, "Where the Wild Things Are" uses some advanced vocabulary, so it is great for learning higher level words and grammar.

尽管是本童书，《野兽出没的地方》用了一些高级词汇，所以对高阶词汇和语法的学习而言，这本书很棒。

youdao

In addition to a much stronger grammar component, the site was more content-rich, intuitive and pleasant to use than Advanced French.

WSJ: Mobile Apps for Foreign Languages