translation.en: But then he devised the critical test: He showed subjects images of food like this and compared them to images with very similar color and shape, but that weren't food, like these.
translation.zh: 但接下来他做了一个修正实验： 他给实验对象展示了像这样的食物图片， 并用了一些在形状和颜色上相似 但不是食物的图片做对比。