Scientists have so far identified more than 700 specimens, including the skull of a prehistoric American lion and the bones of dire wolves, saber-tooth cats, ground sloths and bison.

科学家们至今已识别出了700多个样本，其中包括：一个史前美洲豹的头盖骨以及袋狼、剑齿虎、大地懒、野牛的骨骸。

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Fine powder exits with the air flow, those coarse powder which is near the tooth shaped plate can not exit due to block of the blocking bar until they are ground into fine powders.

细粉随气流排出，贴近齿板的粗粒料因挡板的阻碍不能排除被继续粉碎直至呈粉料随风排出。

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If the child loses an upper tooth, the child's parents plant the tooth in the ground, so the new tooth will grow in straight and healthy.

若孩子掉了上牙床的牙，孩子父母将牙齿种在地下，这样新牙就会长得又直又健康。

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