To find proof as to whether he is "in love" or not, Yukimura pats Himuro on the head from point-blank range. Seeing this, Ibarada, an upperclassman in the Ikeda Lab, talks about the need for a control experiment. In other words, in order to prove that the racing of his heart is because of Himuro specifically and not just because he's facing a woman, Yukimura has to pat Kanade and Ibarada on the head too. Himuro, on the other hand, sets out to prove that food made with love tastes better and cooks, but...
A certain degree of moderation 
should be observed.
.يجب مراعاة قدر معيّن من الاعتدال
Ein gewisses Maß an Rücksicht ist essenziell.
Se espera cierta moderación.
Se espera cierta moderación.
Il y a des règles à respecter.
Bisognerebbe comportarsi con una certa moderazione.
Precisa ter um certo
grau de moderação.
Необходимо соблюдать рамки.