Cole says the legacy of the US military in Afghanistan is best measured by what didn't happen.

科尔说，美军在阿富汗留下的遗产最好用没有发生的事情来衡量。

Now, there is some debate around the numbers because, well, How well could we really have measured those nutrients back in 1950?

现在，围绕这些数字存在一些争论，因为，好吧，我们在 1950 年能够准确地测量这些营养素吗？