to strengthen (relations, etc.)
estrechar lazos ― to strengthen bonds
to shake (the hand)
2020 October 11, Alejandro Ciriza, El País[1]:Novak Djokovic, que no ha sido Novak porque el mallorquín no le ha dejado, le estrecha la mano en la redNovak Djokovic, who hasn't been Novak because the Majorcan hasn't let him, shakes his hand at the net
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In this volume, we discuss the alphabet, definite and indefinite articles, and verbs ser and estar, among other
topics.