[àn shuō]
in the ordinary course of events; normally; ordinarily; according to the fact [common sense]
This is supposed to be an off season for vegetables but you seem to have enough here.
按說現在是蔬菜的淡季， 可是你們這里供應還不錯。
Ordinarily it should be snowing at this time of the year.
按說這時候該下雪了。