67 X 139 + 139 X 21 + 12 X 139
= 139 X ( 67 + 21 + 12)
= 139 X 100
= 13便史慢端比片套游白言900
标签:67x139,139x21,12x
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67 X 139 + 139 X 21 + 12 X 139
= 139 X ( 67 + 21 + 12)
= 139 X 100
= 13便史慢端比片套游白言900
标签:67x139,139x21,12x