Forehead rubbing by male deer on buck rubs presumably sends a great deal of information to other members of the same species.
雄鹿摩擦前额很可能向同类中的其它成员发出了大量信息。
Second, because only male deer rub, the buck rub and its associated chemicals indicate the sex of the deer producing the rub.
第二，因为只有雄鹿会做出摩擦动作，摩擦动作和与之相关的化学物质表明了制造擦痕的鹿的性别。
For a long time biologists believed that male deer used buck rubs not only to clean and polish antlers but also to provide practice for the ensuing male-to-male combat during the rut.
长期以来，生物学家们认为雄鹿擦痕不仅可以清除并磨光鹿茸，还可以借此练习发情期时雄鹿之间的角斗。
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