to suddenly start burning
突然燃え始める (totsuzen moe hajimeru)
"The car burst into flames after the collision."
"衝突後、車が突然燃え始めた。" (Shōtotsu-go, kuruma ga totsuzen moe hajimeta)
to clean and organize a space after someone else has used it
to visit someone casually and without an appointment
to calculate total income or sales
to persuade people to support you or your ideas
to maintain emotional stability and not overreact
to pretend to agree or cooperate with something