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發表於 2015-4-10 10:09 AM
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能承載木板,卻托不住細沙
什麼東西能承載48公斤的木板,卻托不住四點八公克的細沙?
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8 V2 B6 a9 L6 ?( s: b3 K8 O公仔箱論壇答案:水 |
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