一根骨头是来自牛一般大小的哺乳动物的肋骨；另一根是来自山羊一般大小的哺乳动物的腿骨碎片。
One bone was a piece of rib from a cow-sized mammal; the other, a leg bone fragment from a mammal the size of a goat.
由于动物以不同的速度生长着，这儿的有些牛身上还有清晰可辨的肋骨架，“他们还要再养一段时间。”他说。
As the animals develop at different rates, some of the cows here still have well-defined rib cages, "They've got a bit further to go. " he says.
如果有人能在人类篝火的炭火旁发现一具肋骨插着矛尖的双原齿动物骨架，或者发现袋狼的骨头，那将会很有帮助。
It would be helpful if someone uncovered a Diprotodon skeleton with a spear point embedded in a rib — or perhaps Thylacoleo bones next to the charcoal of a human campfire.
因为动物们以不同的速度生长着，所以在有些牛身上还能看到清晰可辨的肋骨架：“他们还要再养一段时间。”他说。
As the animals develop at different rates, some of the cows here still have well-defined rib cages: "They've got a bit further to go, have those," he says.
因为动物们以不同的速度生长着，所以在有些牛身上还能看到清晰可辨的肋骨架：“他们还要再养一段时间。”他说。
As the animals develop at different rates, some of the cows here still have well-defined rib cages: "They've got a bit further to go, have those," he says.
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