to forget what you were thinking or saying
забыть, о чём думал или что говорил (zabit o chom dumal ili chto govoril)
"I lost my train of thought when the phone rang."
"Я забыл, о чём думал, когда зазвонил телефон." (ya zabil o chom dumal kogda zazvonil telefon)
a spoken mistake; saying something unintentionally
to describe something in an overly optimistic way
to try to teach someone something that is difficult for them...
to use the law in a dishonest way to achieve something
to keep working steadily on something
a small or trivial lie
