1. A critical or decisive moment, fact, or issue that is of vital importance to the outcome of something
The crucial point in the negotiation was reaching agreement on pricing.
O ponto crucial na negociação foi chegar a um acordo sobre preços.
2. The most important aspect or element that determines success or failure
The crucial point of the argument is that education improves society.
O ponto crucial do argumento é que a educação melhora a sociedade.