可是，当把测验时间延长到5秒钟时，它们的表现就不如年轻的猴子了。
In longer trials, up to 5 seconds, they didn't perform as well as the younger monkeys.
曾有一段时间，每个老师每周都花一小时来测验学生的各门功课。
There was a time when each teacher spent an hour, one day a week, testing students in every subject.
你们有一个小时的时间来完成这次测验。
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