prime mover

1. N-COUNT The prime mover behind a plan, idea, or situation is someone who has an important influence in starting it. (計(jì)劃、思想或侷麪的)發(fā)起人; 倡導(dǎo)者; 主導(dǎo)者[usu N 'behind/in' n]

He was the prime mover behind the coup. 他是這場(chǎng)政變的幕後指使人。