> In order to ensure the word you found in the dictionary is correct, you need to be good enough in the language. Often there will be homonymns in your native language, and you'll get the wrong word. For example you want to translate the bank of a river but end up with the place that keeps your money.

That's why you use a good dictionary that support phrases, and even give a context annotations[1]. That makes the advice a bit obsolete.

[1] http://www.dict.cc/?s=bank+of+the+river