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No Plagiarism!tt2YxGcP4A5k2e0ZLqGHposted on PENANA
井邊有容量5公升跟3公升的兩個水桶,660Please respect copyright.PENANACgmQ1g0G3T
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該如何利用這兩個水桶,裝出剛好4公升的水呢?660Please respect copyright.PENANAVQPbQpan6I
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660Please respect copyright.PENANAhHRg7G0QwR
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18.190.25.53
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