按理: according to reason; in the ordinary course of events; according to common practice; by (good) right(s); normally 短语和例子按理我该接受她的邀请。 it stands to reason that i should accept her invitation.
按理我该接受她的邀请: it stands to reason that i should accept her invitation
服用这种药按理不会产生并发症: normally there are no complications with the medicine
