Quizlet Flashcards are a great way to learn new English words.  There are many flashcard sets that let you study English words – translated from your native language.  Here’s a large set of flashcards (more than 1000!) with English and Portuguese:

If viewing on your phone, it may be better to use the free Quizlet App (Apple, Android).

Here is a vocabulary Quizlet set for Spanish, Portuguese, Arabic, Russian

You can find more of these – for any language – on Quizlet.com, or in the App, by searching for “Vocabulary English Chinese”  (or whatever your native language is).