When they all are lowering their head & bend their body, it's really shows of social etiquette which is both derivative and representative of the Japanese culture and with great respect to all of us watching the parade and their performance.
彼ら全員が頭を下げて体を曲げるとき、それはまさに社会的エチケットの表れであり、日本文化の派生的かつ代表的なものであり、パレードと彼らのパフォーマンスを見守る私たち全員に大きな敬意を表します。