to make a sincere promise, often used by children
дать искреннее обещание, часто используется детьми (dat' iskrennee obeshchanie, chasto ispol'zuyetsya det'mi)
"I’ll never lie to you again, cross my heart."
"Я больше никогда не буду тебе лгать, перекрещу сердце." (Ya bol'she nikogda ne budu tebe l'gat', **perekreshchu serdtse**.)
to establish the mood or style for something
my patience has run out
a couple who are very affectionate with each other
Knowing a small amount about something can lead to mistakes.
to do something uncertain, trusting that it will succeed
to be less critical or give someone a break
