Unverified75% confidenceTradeoffTime unknown
实物越大越便于低龄孩子抓握操作但越占空间且不便携；磁力款盒装尺寸约A5便于外出携带，木质款操作手感好但基本只能居家用
1
Sources
75%
Confidence
Long-term
Relevance
-
First Seen
Sources
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