The robot was the same size as a regular rat but resembled a simple plastic box on wheels.

这个机器老鼠和普通老鼠一样大，但看起来就像一个简易的带轮子的塑料盒子。

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To train a rat, the experimenter placed it in an operant conditioning chamber: a small plastic box with a lever at one end.

为了训练小鼠，实验人员把它放在一个操作性条件反射室：一个一端置有操作杆的塑料箱。

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You can put your hands through a hole in a clear, plastic box and hold the huge piece of gold.

VOA: special.2010.03.22

Had they the imagination, in that taupe plastic box they could have seen the death of their entire industry.

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At the base of the cardboard backboard is a black plastic box with a pair of small orange switches on it.

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The South American crocodile, which could grow to 2.5m (8ft) long, was found in a plastic box outside Wickid Pets, Wolverhampton, earlier this week.

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