那里有一些警察。

There are some policemen.

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一些警察们被撤下巡逻任务，去教授吉他、钢琴课和英语。

Some of the officers have been pulled off patrol duty to teach guitar, piano classes, and English.

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一些警察每天晚上在警察局接电话。

Some police officers answer calls every night at the station.

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So, studies with police officers using reaction time in split-second choices on who to shoot find that your stereotypical attitudes play a huge role in who you're likely to shoot when they're holding an object in their hand that's unclear.

一些针对警察的研究,用霎间的反应时间让他们作出选择,应该向谁开枪，研究发现这些刻板态度,能极大的影响你选择向谁开枪,当他们手里拿着不明物体时。

耶鲁公开课 - 心理学导论课程节选