First you must find out the clause of the quality problems and furnish sufficient evidence.
首先你的查查有关质量问题的条款,并提供足够的证据。
In a short time I was busy mixing butter and flour and my hands were soon covered with sticky pastry.
不一会儿我就忙着调拌起了黄油和面粉,很快我的手上就沾满了粘粘的面糊。