A student is caught cheating with his cell-phone, and Chiaki is super-mad! He calls all the students to an assembly and angrily threatens to destroy the phone of anybody who's caught with one on school grounds.  The students begin to get angry...
he looked sterner than I'd ever seen.
بدا صارماً بشكل لم أره عليه قبلاً
machte er ein
wütendes Gesicht.
aveva una faccia tiratissima
 che non gli avevo mai visto.
nunca vi o professor tão zangado.
он выглядел суровее, чем обычно.