These machines have increased our work efficiency many times.这些机器使我们的工作效率提高了许多倍。To call in a plumber will be many times the do-it-yourself cost.请管子工的费用要比自己动手贵上许多倍。At yesterday's auction an old coin sold for many times more than its face value.在昨天的拍卖会上，一枚古币以高出面值许多倍的价格售出。