to make a mistake when dealing with something difficult
ошибиться, пытаясь справиться с чем-то сложным (oshibit'sya, pytayas' spravit'sya s chem-to slozhnym)
"She tripped up on the hardest part of the puzzle."
"Она трип ап он самой сложной частью головоломки." (Ona trip ap on samoy slozhnoy chastyu golovolomki.)
to lose your temper and shout at someone
to turn upside down accidentally
to prepare a team with the tools or mindset they need
to expect or rely on something happening
to prevent large fluctuations in the value of a currency
to suddenly feel or show great happiness