官方解释1 p0 l4 e$ y- ~; k2 h http://www.stm.info/en/info/fares/transit-fares/monthly-cam $ R" }! |8 E3 Y4 x0 i& y, C Q3 e- e7 q3 y6 v3 R
The transit fare is valid from the first to the last day of the month. h( P, l+ X; W9 F! k5 @
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Monthly fare cards are available on the 20th day of the preceding month at all points of sale. - S+ [. t* p( a1 l) \4 a
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也就是说,不能跨月,不能用到下个月!可以提前买下个月的票