词汇	be up to youroldtricks
释义	be up to youroldtricks 故伎重演；耍老花招
随便看	organic pollutants organic pollu-tants organic polluters organic pollution organic pollution criteria organic pollution matters Organic pollution of water body Organic pollutions organic pollution source organic pollution synthesis value A organic polyelectrolyte Organic polyester-resin organic polymer organic polymer coating organic polymeric flocculants Organic polymeric monolithic substrate organic polymeric quarternary ammonium salt organic/polymer light-emitting devices organic polymer material organic polymer materials organic polymer materilas Organic polymer monolithic column organic polymer pastes in chip resistance organic polymers organic polymolecular transducer