un down 1.撞倒 The liner ran down a fishing-boat during the dense fog.在浓雾中,客轮撞翻了一条渔船.2.追寻 They are running down a criminal.他们正在追缉一名罪犯.3.诋毁 Uncle George is always running do...
她总是在她的朋友的背后诋毁他们的名誉。他很快将没有任何朋友了。 run down 1. 撞倒 The liner ran down a fishing-boat during the dense fog. 在浓雾中,客轮撞翻了一条渔船。 2. 追寻 They are running down a criminal. 他们正在追缉一名罪犯。