both sides must trust each other
обе стороны должны доверять друг другу (obe storony dolzhny doveryat' drug drugu)
"Trust goes both ways in any relationship."
"в любых отношениях доверие должно быть взаимным." (v lyubykh otnosheniyakh doverie dolzhno byt' vzaimnym)
to aim for something that is difficult or seemingly impossib...
about to be very surprised or shocked
having two very different sides to one's character
to make a serious or formal promise
to set a limit or boundary
to use the same tactics as one’s opponent
