نگویید "I Don't Know !"

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00:00 مقدمه
00:44 You don't know ANYTHING
04:17 You're NOT SURE
05:26 You need a STRONGER word
06:33 You don't UNDERSTAND
07:26 Vocabulary memorization tips
08:01 You don't know what your DECISION is
10:47 Pronunciation of 'I don't know'