ethnic originˈeθnikˈɔridʒin短语⁶⁶¹²⁵ 基本例句 种族本源 However they provide no information for larger, untested populations with different characteristics from the trial group, such as age, gender, state of health, and ethnic origin. 但是，这种试验无法得到更大范围内、试验组群中具有不同特点且未经检验的人群比如年龄、性别、健康状况和人种信息。 who