This stops the sound and releases a food pellet.

这一按，声音停止，并有一团食物递送出来。

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If you want to train a laboratory rat to pull a crank to get a food pellet, the reflex will be scratched in deeper if the creature is rewarded with some regularity but not all the time.

如果你想训练一只实验室老鼠拉曲柄去拿到一粒小丸，并定时给它一些小奖励的话，(但不是每次都一样，)那么这个小东西的条件反射会更强烈。

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They were rewarded with an M&M candy each time they correctly completed the task without help and with a less desirable food pellet when they completed the task with hints from the help icon.

只要它们能够在不接受帮助的条件上正确地完成任务，他们就会被奖励一块M&M糖果。 如果它们通过点击帮助图标获取提示的方式完成任务，只能得到一个不太令它们满意的食物丸。

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For instance, every time a friend puts a picture of food up on Instagram, a little hamster feeder could dispense a flavorless pellet.

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