force that increases the rate of development of a process; impetus
quantity of motion of a moving object, measured as its mass multiplied by its velocity
"the car's momentum carried it off the road"
"the momentum of the particles was deduced from meteoritic velocities"
His momentum rolled him over and over down the incline.
出自： J. Tyndall
Tiredness vanished as the narrative gathered momentum.
出自： R. Hayman
Teenage friendships tend to develop their own momentum.
出自： E. Pawel