An unreinforced response is when the bell goes on but there's no food.

非强化反应是有铃声但却没食物的时候。

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An unreinforced trial is when you get the food without the bell.

非强化尝试是只有食物而没有铃声的时候。

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And there's a difference between reinforced trials and unreinforced trials.

但强化尝试和非强化尝试是不一样的。

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