國內親戚家有類似可變的桌子。
人少時用小方桌,人多時把下麵藏著的圓桌板抽出,變成一個大圓桌,
• 還是你厲害。如果孩子看出圓桌中心的切邊方形與之前方桌麵積一樣, -中間小謝- ♂ (285 bytes) () 08/30/2020 postreply 21:38:19
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