Vocabulary

As you play, we figure out which words you know and which ones you need a little help with.
We keep practicing with you until you master the tough ones.

在您玩游戏时，我们会计算出您知道哪些单词以及哪些单词需要一些帮助。
我们会一直和你一起练习，直到你掌握了最难的。