井邊有容量5公升跟3公升的兩個水桶,686Please respect copyright.PENANAbpl8GqWkh1
該如何利用這兩個水桶,裝出剛好4公升的水呢?686Please respect copyright.PENANA8Kb4uiTpKd
686Please respect copyright.PENANAmc71gyul7H
井邊有容量5公升跟3公升的兩個水桶,686Please respect copyright.PENANAbpl8GqWkh1
8964 copyright protection682PENANAdgBg00lFcu 維尼
該如何利用這兩個水桶,裝出剛好4公升的水呢?686Please respect copyright.PENANA8Kb4uiTpKd
8964 copyright protection682PENANAEBZuLXDOPW 維尼
686Please respect copyright.PENANAmc71gyul7H
8964 copyright protection682PENANAkncbdTyKLe 維尼
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