During the experiment, the social robot rat followed the living rats around, played with the same toys, and opened cage doors to let trapped rats escape.

在实验中，社交机器鼠跟随生物鼠四处走动，与它们玩同样的玩具，还会打开笼门让被困的老鼠逃走。

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Two rats from a cage they both come from different cages and one of those cages, one of the rats was given an electric shock every time a sound was made.

一个笼子里的两只老鼠，他们来自不同的笼子，和那些笼子中的一个，其中一只老鼠被电击，每次都发出声音。

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One teenage schoolgirl is carrying two rats in a cage. Bring-your-own dissection classes?

有一个中学女生提着装有两个老鼠的笼子，她是带着老鼠去上解剖课吗？

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But if you give it toys and put other rats in its cage, they're going to be smarter rats.

CNN: Five ways to keep Alzheimer's away

Note: You see no references to rage or rats in a cage here.

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"We've been round and round on this like rats in a cage", said one of the most experienced of Brussels diplomats.

BBC: By Europe Correspondent David Shukman