明尼苏达大学的一项调查发现，就连看一个一到三分钟的广告都会对女孩们的自尊产生负面影响。
One study, from the University of Minnesota, found that just seeing advertisements from one to three minutes can have a negative impact on girls’ self-esteem.
明尼苏达大学的一项调查发现，就连看一个一到三分钟的广告都会对女孩们的自尊产生负面影响。
One study, from the University of Minnesota, found that just seeing advertisements from one to three minutes can have a negative impact on girls' self-esteem.
一个教授和二十名到三十名学生每周上课两三次，每次授课时间45到50分钟。这是大学课堂教学的传统方式。
Eg. Traditionally classes at college level bring the professor and a group of 20 to 30 students together for a 45-to-50-minute class two or three times a week.
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