为了得到男性排尿习惯的初步信息，研究者在美国大学公共厕所里安排了一个观察者。
To gather some preliminary data on men's toilet habits, a pilot study stationed an observer in a public toilet at a US university.
1/3的美国男人在公共厕所如厕后不洗手。
One in three American men does not wash his hands after using a public lavatory.
1/3的美国男人在公共厕所如厕后不洗手。
One in three American men does not wash his hands after using a public lavatory.
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