井邊有容量5公升跟3公升的兩個水桶,470Please respect copyright.PENANAkopm6Y7KOB
該如何利用這兩個水桶,裝出剛好4公升的水呢?470Please respect copyright.PENANAWW26kxP4PL
470Please respect copyright.PENANAsaFAcUAvm0
井邊有容量5公升跟3公升的兩個水桶,470Please respect copyright.PENANAkopm6Y7KOB
8964 copyright protection466PENANA525ryH6ETh 維尼
該如何利用這兩個水桶,裝出剛好4公升的水呢?470Please respect copyright.PENANAWW26kxP4PL
8964 copyright protection466PENANAA664jpfYdo 維尼
470Please respect copyright.PENANAsaFAcUAvm0
8964 copyright protection466PENANAQBmnaj31HP 維尼
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