井邊有容量5公升跟3公升的兩個水桶,727Please respect copyright.PENANAE4G8WBeDC1
該如何利用這兩個水桶,裝出剛好4公升的水呢?727Please respect copyright.PENANAocQNMBmnm0
727Please respect copyright.PENANAOAye4og8oK
井邊有容量5公升跟3公升的兩個水桶,727Please respect copyright.PENANAE4G8WBeDC1
8964 copyright protection723PENANAj1nje91Vc0 維尼
該如何利用這兩個水桶,裝出剛好4公升的水呢?727Please respect copyright.PENANAocQNMBmnm0
8964 copyright protection723PENANAHSzdXeN5uO 維尼
727Please respect copyright.PENANAOAye4og8oK
8964 copyright protection723PENANAWpP4z094F1 維尼
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