No Plagiarism!4UKQ5djSsY0D9QKnmQFtposted on PENANA 1. 把5L水桶裝滿倒進3L中,剩2L。661Please respect copyright.PENANAWQskkDV6Z0
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2. 3L水桶倒空,2L從5L水桶倒過來後,把5L再次裝滿。661Please respect copyright.PENANAVMRbiBwfrl
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3. 再從5L水桶倒出1L到3L水桶,就OK了。661Please respect copyright.PENANAGt6Vjm3i5l
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