id	keyword
american_scientific_journal-1917	̇ �
american_scientific_journal-1917	� ̇
american_scientific_journal-1917	� 𝐿
american_scientific_journal-1917	𝑅𝑅 �
american_scientific_journal-1917	robot
american_scientific_journal-1917	� −
american_scientific_journal-1917	velocity