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Your computer can help you look up the definitions of words you don't understand.

e.g. in FireFox, double click to select the word, then right click and there is "search DuckDuckGo for 'word'" in the menu. Dictionary extensions are available for in-browser definitions, and searching DuckDuckGo or Google for "define:word" will usually bring up a definition in the search results page, or if not then in the top few result links.