steamroller

1. N-COUNT A steamroller is a large, heavy vehicle with wide, solid metal wheels, which is used to make the surface of a road flat. In the past steamrollers were powered by steam. (蒸汽)压路机

2. V-T If you steamroller someone who disagrees with you or opposes you, you defeat them or you force them to do what you want by using your power or by putting a lot of pressure on them. 迫使; 逼迫

They could simply steamroller all opposition. 他们可以直接镇压所有反抗。