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The child sat as quiet as a mouse, hardly touching her food, except the little roll.

海蒂像老鼠一样安静地坐着，除了那一小卷面包外，几乎不吃东西。

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In the first model, a group of mice were put in a cage with levers that dispensed food. When the mouse pushed a lever, a liquid treat — either a starchy or a sweet liquid — came out.

第一组试验中，一群老鼠被置于一个装有能提供食物的操纵杆的笼子里，当老鼠推动操纵杆的时候，一滴液体食物(含有淀粉或糖的液体)就会掉出来。

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Of course, you don't make it to the top of the GPA food chain without connecting with a keyboard and mouse on the regular.

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In other cases, in lieu of cheese, there was a menacing cartoon owl hovering above the maze, such that it behooved the mouse to reach the exit so as not to become bird food.

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