it is imposible if you will study English without dictionary. Because, dictionary like a stick for blind man. I always say to my students, if you want to study English, you should have dictionary. No matter the dictionary is big or small, no matter the dicrionary is cheap or expensive, the important is you have it. Make it be a your partner in study English. Because, it will help you to know the meaning of every word that you don't know yet.
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From @wahab26