劍橋詞典relating to standing up straight 直立的 If you feel that your blood pressure changes because of the posture and position you are holding , you may be suffering from orthostatic hypotension. 如果你覺得你的血壓因你的身躰姿態(tài)和位置而改變，你有可能患有直立性低血壓。 返回 orthostatic