Each fold in the skirt should be exactly the same width.

裙子每条皱折的宽度应该完全一样。

《新英汉大辞典》

Each fold in the skirt should be the same width.

裙子的每条折都应该一样宽。

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The optimum improving effect can be obtained when the width and depth of skirt border improvement are approximately equal.

当裙边加固宽度与加固深度相当时，加固效果最优。

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