1、The denticulation on the edge of the leaf helps to deter herbivores from eating it.
叶子边缘的齿形有助于阻止草食动物吃掉它。
2、The denticulation on the gear wheel provides better gripping and prevents slipping.
齿轮上的齿状结构提供了更好的抓地力,防止滑动。
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