Vocabulary:在线英语词典学习平台是英语词典应用程序网站，可以通过4000多个选择题来扩大词汇，了解英语水平后，进一步优化这些选择。
Vocabulary平台功能特点：
1、Answer a few questions
We've created more than 40,000+ questions designed to help you learn words.
2、We build a model of your knowledge
Our magical technology models your brain. The more you play, the more we know about your vocabulary knowledge.
3、We predict which vocabulary words you don’t know and teach them to you
Get a question wrong? We’ll schedule Review and Progress questions so that you’ll learn the word, and won’t forget it in the future.
4、You learn useful words and improve your vocabulary
Track your progress as you quickly master the words that are essential to success in an academic or business environment.
Vocabulary反复出现错误的主题，直到正确为止。Vocabulary.com网站的附加功能包括字典、词汇博客和栏目，用户可以制作和共享词汇表。例如，100个以字母a开头的SAT常考词汇。