Levi Strauss persuaded the court that, by selling its jeans cheaply alongside soap powder and bananas, Tesco was destroying the image and so the value of its brands--which could only lead to less innovation and, in the long run, would reduce consumer choice.

　　結構分析：that之后是一個賓語從句;by之后的動名詞來做賓語從句的狀語;賓語從句中which又引導了一個非限制性定語從句。

　　譯文：利維.斯特勞斯公司使法庭相信特易購把利維牛仔服與皂粉，香蕉等放在一起廉價銷售這一做法使其形象受損，品牌價值也因此受到了影響，這勢必會使產品缺乏新意，最終減少消費者的選擇。