edge out
1．displace 取代
Colour TV sets are gradually edging out black and white ones．彩电正在逐渐取代黑白电视机。
Imported cars from Japan are edging out American cars.从日本进口的汽车正在取代美国的汽车。
2．supplant; defeat or surpass by a small margin排挤掉；险胜
That forceful young woman edged out the forner chairman and is now chairman herself．那位年轻的女强人逐渐挤掉了前任主席，现在她自己当上了主席。
In the last election they succeeded in edging their opponents out by a small margin．在最近的一次选举中，他们以微弱的多数票挤掉了对手。