Trains operating within the network typically travel at speed up to, and stop for about 20 seconds at each station.
In fact, speed up a little bit.
"To start, speed up, stop on a dime and leave two nickels".
Unfortunately though, when I see another rider, I have no idea if they are going to slow down, speed up, stop, run over a pedestrian and say it was my fault or do a wheelie down the wrong side of the road.
Finally he creates racers who turn left, turn right, speed up or stop whenever specified keys on the controller are pressed.
Well if you do, your fellow driver in the next lane will quickly speed up to stop you from getting over.
It sped up, then stopped, then flew at our speed, in our direction, so that to us it [appeared to be] standing still.
Each of these steps is extremely complex, and a wide range of other molecules can speed up, slow down, stop or otherwise disrupt the expression of genes as protein products.
In real life, however, this model often doesn't accurately reflect the motion of moving objects, which can, in reality, speed up, slow down, stop, and reverse over time.
