For the same reason that soldiers had flags with the skull-and-cross bones image on it.

同样的原因士兵会带着画有头颅和十字骨的图片的旗子。

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With cross anatomical method, the anatomy of the skull bones of reindeer was studied and compared with that of camel, horse and cattle.

运用大体解剖的方法对驯鹿头骨进行了形态学观察，并将其与双峰驼、牛、马的头骨进行了比较。

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With cross anatomical method, the anatomy of the skull bones of reindeer was studied and compared with that of camel, horse and cattle.

运用大体解剖的方法对驯鹿头骨进行了形态学观察，并将其与双峰驼、牛、马的头骨进行了比较。

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