Summer flood, there I stepped on the footprints in the sand, roll up their trousers to walk slowly in the waterside leisure interest.
夏天的河滩上有我在沙地上踩过的脚印，挽起裤脚慢慢行走在水边的闲趣。
你竟敢踩着我的蛋卷！
The paper discusses the necessity of applying double stepped backup rolls, and describes the methods for calculating the contact length and stepped depth and work roll crown.
论述了采用双阶梯支承辊的必要性。 提出了接触长度、阶梯深度及工作辊凸度的计算方法。
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