“If you don't fail, you're not even trying.” by Denzel Washington

Wednesday 12 February 2014

Cardinal number vs. ordinal number/基數(純數) vs. 序數

Cardinal number vs. ordinal number/基數(純數) vs. 序數，cardinal number是一般我們知道的1, 2, 3，ordinal number則是指第一，第二，第三，跟大家一起複習一下。
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