井邊有容量5公升跟3公升的兩個水桶,490Please respect copyright.PENANAT4fpYlsEEH
該如何利用這兩個水桶,裝出剛好4公升的水呢?490Please respect copyright.PENANAow7n65p7kp
490Please respect copyright.PENANATKJI5xQoAB
井邊有容量5公升跟3公升的兩個水桶,490Please respect copyright.PENANAT4fpYlsEEH
8964 copyright protection486PENANAq2lM0DTJEW 維尼
該如何利用這兩個水桶,裝出剛好4公升的水呢?490Please respect copyright.PENANAow7n65p7kp
8964 copyright protection486PENANAuNEhWc5BQc 維尼
490Please respect copyright.PENANATKJI5xQoAB
8964 copyright protection486PENANALBfrZAjFnf 維尼
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