About vocabulary
<div>during my learning English,I find a problem bother me long time.frquently,I want to express a sentence,but can’t remember the counter English words. I think if my vocabulary store too less </div><div>if you have better word app,or learning app you can recommend to me </div><div>thank you</div>

<div>There's a free app called "GRE Vocabulary Flashcards" that has a ton of words, and gives their explanation if you don't already know them. :) </div>