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關注：1
2013-05-23 12:21
求翻譯：at Level 1 in representation. If a child was at Level 2 in abstraction, he or she was是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
at Level 1 in representation. If a child was at Level 2 in abstraction, he or she was
問題補充： |
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