Most American adults have a heart that's older than their actual age.

对于绝大多数美国成年人来说，他们的“心脏年龄”都老于实际年龄。

Then you press a button, you find out what your actual fitness age is.

之后按下按钮，你就会知道你的健康年龄。

If you smoke or have high blood pressure, your heart age will be much higher than your actual age.

如果你吸烟，或是患有高血压，那么你的“心脏年龄”将会大于你的实际年龄。

But even with radiometric dating, as decay measurements became known, it would be decades before we got within a billion years or so of Earth's actual age.

但是，即使利用放射性测定年代法，即后来所谓的衰变计算法，也要等几十年以后我们才得出地球的真正年龄大约是在10亿年以内。

And new diagnostic tools are now offering scientists means to calculate the " biological ages" of bodies and organs and compare them with actual calendar ages.

新的诊断工具现在为科学家提供了计算身体和器官的“生物年龄”并将其与实际日历年龄进行比较的方法。

Both numbers were obviously way off, but when the students were then asked to guess the actual age at which he died, the first group's answers averaged to 50 while the second group's averaged to 67.

这两组问题显然都是错误的，当学生被要求猜测甘地什么时候去世？第一组学生平均答案是：50岁第二组：67岁。