... 百位数之间的数数 (Counting Between Hundreds) 继续数数 (Count On!) 不同位上数的值 (Place Value) ...
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其他研究人员并不相信这一理论。虽然争论还在继续，但动物会数数的事例越来越靠谱，因为一只白骨顶。
Other researchers aren't convinced. But though the debate goes on, the case for animal counting just got stronger... by the weight of one coot.
那位先生继续微笑着说：“数数你们用了多少次‘要是’和‘等到’这两个词。
The gentleman smiled and said, "Start counting how many times you use the works 'if'and 'when."
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