Sergei sah seinen Lehrer aufmerksam an, das dünne Bärtchen, die Brille, die von der Nasenwurzel etwas tiefer herabgerutscht war, und geriet in seine Gedanken hinein, daß er nichts mehr von dem hörte, was ihm der Lehrer erklärte.
Serezha looked attentively at his teacher, at his thin little beard and his spectacles which had slipped down the bridge of his nose, and became so engrossed in thought that he no longer heard what his teacher was explaining.