日期:
来源:雅诚德英语网
One group was treated with the new drug, and the control group was given a sugar pill.
一组采用新药治疗,而对照检验组服用的则是糖丸。
One group was treated with the new drug, and the control group was given a sugar pill.
一组采用新药治疗,而对照检验组服用的则是糖丸。