In one well-known example, participants watch a video of people passing a basketball between each other, and they are asked to count the number of passes.
这是一个非常著名的例子，在这个实验中，被试观看一段人们彼此传递篮球的视频图像，并要求其报告在人们之间一共传递了多少次。
Generally, the number of passes that must be made to render the combined object is the sum of the number of passes for each of the separate objects, and so nothing is gained by combining.
一般情况下，要渲染合并物体的通道数是每个单独物体的通道数之和，所以通过合并没有得到好处。
Generally, the number of passes that must be made to render the combined object is the sum of the number of passes for each of the separate objects, and so nothing is gained by combining.
一般情况下，要渲染合并物体的通道数是每个单独物体的通道数之和，所以通过合并没有得到好处。
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