官方解释, t v8 `$ |/ i6 F2 ^7 t http://www.stm.info/en/info/fares/transit-fares/monthly-cam) p1 G. A2 M! p6 H/ c$ v! ` I: d
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The transit fare is valid from the first to the last day of the month. 1 r1 A6 d* E" C' y8 U0 ^0 k ! F9 H" P# |7 D+ O+ [Monthly fare cards are available on the 20th day of the preceding month at all points of sale. : a. B: j" l( M9 p. f: E H1 A% l9 ^1 o7 |! r
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